I think it is the answer, because when it says it is talking about it as a noun or a subject.
Answer:
it would be slightly different than if he had written it directly after it happened.
Explanation:
Peoples memories change everytime they remember them, based off of their emotions at the moment and new life experiences. This would change somebodies knowledge of what happened. First hand accounts are always better, because it is fresh in somebody's mind.
Explanation:
Your Question is not much clear friend..
hope you might understood
I think its A. They establish this section's grim mood. Hope thus helps :D