A．Bryan McFadden will have to give up the second album.
B．Mariah Carey has taken Ronan Keating's role.
C．Westlife might be upset about Ronan Keating's withdrawal.
D．Westlife will have the second album recorded in the U.S.

单选题根据下面材料，回答题.


All the following statements are the masons why commercial aquaculture is pushed forward EXCEPT

A．the human population is increasing fast.
B．the wild fish stocks are decreasing due to over fishing.
C．the cost of developing aquaculture is comparatively low.
D．there is no improvement in conventional farm production.

A．change feed into muscle more efficiently.
B．stand low oxygen levels in water.
C．tolerate extremely cold water.
D．grow larger and faster.