下列词语中加点的字的读音全都相同的一组是 

A．汲取吸纳负笈游学岌岌可危

B．犄角旖旎畸轻畸重掎角之势

C．翌日云翳断尾蜥蜴疆埸防守

D．盘桓城垣流水潺湲名媛淑女

This exam is very difficult. Many students are concerned         the results.

A．about

B．with

C．in

D．of