单选题Questions are based on the following passage.
Amazon is facing a battle with UK publishers as it seeks to secure more advantageous terms in its latest round of contract negotiations. The web giant wants the right to print books itself if publishers fail to provide adequate stock, and wants publishers to match any pricing deals it offers to other distributers.
"Print-on-demand"
Among the new clauses of the contract negotiations were the right for Amazon to print its own copies of a book if a publisher runs out of stock. The Seattle-based company would do this using its"print-on-demand" equipment, and would require publishers to hand over electronic versions of their titles. The process, which can print books more quickly than a traditional press, is generally thought to offer an inferior product. Publishers are concerned that if Amazon used this method to print books, customers would blame them, and not the tech firm, for the quality.
Another clause, known in the industry as a "most favoured nation" (MFN)proposal, asks publishers not to offer promotions to distributors without also offering them to Amazon. This would include selling books at a discount on the publishers´ own websites.
It also demands that publishers inform Amazon before offering e-book deals to other clients,and give the tech firm the same terms.
One representative of a mid-sized firm said Amazon had become "increasingly cruel" in its negotiations, while another accused Amazon of "bullying".
Publishers also said that Amazon generally prefers verbal agreements, and rarely documents its negotiations, but had done so in the latest round of talks, with one mid-sized firm saying this was the first time it had received correspondence outlining such terms.
In a separate development, a German trade association has brought a complaint against Amazon to the country´ s competition authorities, claiming the firm abused its market dominance.
On Thursday, the Associated Press reported that the French government, in a bid to support the country´s small bookshops, has adopted a bill that will prevent Amazon and other online retailers from offering free deliveries of discounted books.
But Mr Jones also emphasized the positive role Amazon has played in the bookselling industry."The worst thing that could happen (to book publishers)would be for Amazon to go away," he said. "The second worst thing would be for it to become more dominant."
When can Amazon print its own copies according to the new clause?
A．When the readers make pre-orders.
B．When the publishers have not enough stock of certain books.
C．When this kind of book is very popular in the market.
D．When the copies the publishers offered are of poor qualities.