A memoir describes past events, but it is not considered a historical document. Why?

Abecause a memoir does not include many facts
Bbecause a memoir relates only the experiences of others
Cbecause a memoir relies largely on the writer's memories
Dbecause a memoir is not written by a historian

Verified Answer :

The answer is B) Because a memoir relates only the experiences of others. 

A memoir is known to be only experiences that's based on the writers term of what they can remember during that time. Therefore, you cannot say that this is not totally related to past events in history, but rather past experiences that a person has remembered.