男性，20岁，踢足球时右膝摔伤，8周后仍疼痛。查体：右膝肿胀，浮髌试验阳性，前抽屉试验阳性，侧方应力试验阴性。

关于膝关节交叉韧带下列哪项说法正确（）

A.交叉韧带为纤维软骨

B.与后交叉韧带相比，前交叉韧带更容易受损伤

C.前交叉韧带损伤通常见于伸直位的侧方应力

D.单纯后交叉韧带损伤无需治疗

E.单纯前交叉韧带损伤无需治疗

As was expected, only five people turned up at the party, __________ disappointed the hostess very much.

A．which

B．that

C．who

D．where