双氯芬酸钠的化学结构式为

A、[img=~/QImg/Tiles/YA54_053_32_
A、gif]
B、[img=~/QImg/Tiles/YA54_053_32_
B、gif]
C、[img=~/QImg/Tiles/YA54_053_32_
C、gif]
D、[img=~/QImg/Tiles/YA54_053_32_
D、gif]
E、[img=~/QImg/Tiles/YA54_053_32_
E、gif]