求助， 找不到谓语动词

求助啊？？

Medicare, the United States government’s health insurance program for the elderly and disabled, covers the full cost of home health care, but not with other nonhospital services where 20 percent of the costs must be paid by beneficiaries.

A.    but not with other nonhospital services where 20 percent of the costs must be paid by beneficiaries

B.    but not of other nonhospital services, making beneficiaries pay 20 percent of the costs

C.    but not of other nonhospital services, for which beneficiaries must pay 20 percent of the costs

D.    which is unlike other nonhospital services in that 20 percent of the costs must be paid by beneficiaries

E.     which is unlike other nonhospital services that make beneficiaries pay 20 percent of the costs

答案很容易选 C

但是，  在 but 后， 应该是个分句， 可是这个分句的谓语动词在哪里啊？

it should be like this:

but not of other nonhospital services, for which beneficiaries must pay 20 percent of the costs = but not ( the full cost) of .....