This printer is of good quality. If it _____ break down within the first year, we would repair it at our expense. [ ]

A. would

B. should

C. could

D. might

女，64岁，反复尿频尿急尿痛6年余，尿常规检查：红细胞(++)，白细胞(++)。CT扫描如图示，下列说法正确的是()

A．右侧输尿管下段管壁增厚，管腔狭窄

B．右肾积水

C．右侧输尿管上段扩张

D．考虑为慢性输尿管炎

E．考虑为输尿管移行细胞癌