How will a writer's decision to use a first-person narrator impact the story?

1.It will prevent the writer from setting the story in the past.

2.It will push the writer to center the story on a conflict that is external and between other characters rather than one that is internal to the narrator.

3.It will make it impossible for the writer to include flashbacks in the story's plot.

4.It will force the writer to use descriptions of the other characters' actions and their dialogue to reveal or suggest their thoughts, feelings, and motivations.