男性，7个月。右侧小耳畸形，左耳正常。根据患儿情况，在处理的时间把握上和治疗方法上宜采取（）。

A.立即行耳再造

B.1岁时植入骨传导听力辅助装置

C.4岁时植入硅橡胶耳支架

D.4岁时行外耳道成形

E.6岁时行自体肋软骨支架耳再造术

The long-run production decision differs from the short-run production decision in that:（）

A. variable costs can be changed in the short run but not the long run.

B. variable costs can be changed in the long run but not the short run.

C. fixed costs can be changed" in the long run but not the short run.