She can't go out to work because she has to stay at home to ________ her elderly mother.[ ]

A. care for

B. take care of

C. look after

D. all the above

艾滋病病毒广泛存在于艾滋病感染者/患者体内的血液、组织液、淋巴液、精液、 * * 分泌物、乳液、汗液、泪液、唾液等。