The student said to me, "She has made a close study of the problem."

The student told me that she __ a close study of the problem. [ ]

A. has make          

B. have made

C. had make          

D. had made

患者，男性，56岁，双下肢乏力1年，以右侧为主，近3个月出现步态不稳，右手不能扣纽扣，否认外伤史。查体：体温正常，两上肢前臂、手及上臂尺侧皮肤感觉减退，双下肢及躯干部感觉减退，四肢肌力减弱，左上肢肌力Ⅲ级，右上肢及双下肢肌力Ⅳ级，肌张力增高，肱二头肌、肱三头肌反射亢进，双侧膝踝反射亢进，双侧巴氏征阳性。该患者诊断考虑为（）

A.颈椎病

B.颈椎结核

C.颈椎肿瘤

D.颈神经根炎

E.脑卒中