躯体性腹痛的特点为（）

A.腹痛也可因体位变化而加重

B.可有局部腹肌强直

C.疼痛剧烈而持续

D.定位准确，可在腹部一侧

E.腹痛可因咳嗽而加重

—Do you still remember that accident, Danny?

—Of course. I'll never forget it   _____ it happened so long ago.[ ]

A. only if

B. even though

C. because of                

D. ever since