---________ do you use your pocket money for?

--- The money _________help poor people.

A．Why; used to

B．What ; is used to

C．Why; is used for

D．What; use to

女性，32岁，原发不孕，痛经5年逐渐加重，经前1～2天开始下腹、腰痛，经后渐消失。检查：子宫大小正常，后倾、不活动，双侧附件均可触及直径5～6cm之囊实性包块，欠活动，双骶韧带串珠状痛性结节。应考虑下述何种诊断（）

A．慢性盆腔炎

B．结核性盆腔炎

C．盆腔子宫内膜异位症

D．双侧输卵管卵巢囊肿

E．卵巢癌