There is something wrong with my computer. I don't know how to_____ it. [ ]

A. do with

B. catch up with

C. deal with

D. help with

女性，20岁。膝下内侧肿物2年，无明显疼痛，X线片：胫骨上端内侧骨性突起，基底宽。

最可能的诊断（）

A.骨样骨瘤

B.骨肉瘤

C.软骨瘤

D.软骨肉瘤

E.骨软骨瘤