Answer:
A
Step-by-step explanation:
The narrator tells the story using I, I'm, I'll, because they are talking over themself, so it wouldn't be D.
It's also in first person so that means other characters wouldn't be able to narrate, that marks C out.
And, 1st and 3rd person perspectives are from a character's perspective in the book. So that means a first person narrator would have to be a character you hear narrating using words like I, I'm, etc. Meaning that you wouldn't be narrating, as it would be 2nd person (you, you'd, you'll). So it's not B.