下列哪一项是儿童少年发生肥胖较敏感的阶段（）。

A.孕后期及幼儿期

B.婴儿期及幼儿期

C.孕后期及青春晚期

D.幼儿期及青春早期

E.孕后期及青春早期

Look! What has happened. I'd rather you ______ her about the bad news. [ ]

A. would not tell  

B. hadn't told  

C. didn't tell  

D. hasn't told