A．150．
B．151．
C．152．
D．153．

A．Because they find it not challenging enough to play them．
B．Because they consider it important to be different from girls．
C．Because they find them too hard to play．
D．Because they think it silly to play them．

A．Children with private music tutors．
B．Children who are between 5 and 7．
C．Children who are well-educated．
D．Children who are 8 or older．