—I'm afraid I must be off now. —. A. No problemB. Never mindC. See youD. It doesn't matter

网友回答

A. No problem
B. Never mind
(答案→)C. See you
D. It doesn't matter
解析：句意：--现在我恐怕要走了。--再见。No problem没问题；Never mind没关系；See you再见；It doesn't matter没关系。根据句意故选C。