hello Muhammed,
I agree with you that Answer A is the most correct answer. I found this question in many forums with different model answers. but frankly this is one of the questions that I think are not well formed and I wouldn't expect a similar question in the real exam.
As for why I think A is the correct answer, please check page 100 of the PMBOK, you will find a step by step methodology for the close project or phase, in the last point you will find the last action is archive project information for future use by the organization.
"This includes all planned activities necessary for administrative closure of the project or phase, including stepby-
step methodologies that address:
• Actions and activities necessary to satisfy completion or exit criteria for the phase or project;
• Actions and activities necessary to transfer the project’s products, services, or results to the next phase
or to production and/or operations; and
• Activities needed to collect project or phase records, audit project success or failure, gather lessons
learned and archive project information for future use by the organization."