— Andy, you were the only person that was late for the meeting, why?

— Sorry, sir. But I really had a _____ time finding the meeting hall. [ ]

A. enjoyable

B. funny

C. difficult

D. pleasant

学习和研究人事管理学的（），是为了建立和完善社会主义组织人事管理体系，提高组织行政管理的效能，促进社会生产力的发展。