男，19岁，上牙列拥挤，牙弓狭窄，牙量大于骨量4mm，磨牙中性，其最佳治疗方法是

A．扩大牙弓宽度

B．单侧拔牙

C．减径法

D．推磨牙向后

E．局部开展法

Believe in yourself.  You're better than _________.  You are sure to succeed.         [ ]

A. someone else                        

B. anyone else            

C. everyone else                

D. no one else