In my opinion, I think it is A.
Hope helps-Aparri
B..................................................................
<span>Tone is the way an author's words make the reader feel.
in general, writer could create a tone of the story with these following ways :
- Directly tell the readers about what the character currently feels
- by giving some clues about the reactions surrounding the characters
- By reflecting the condition with character's experiences</span>
1.a) It would be A
1.b) I would say B
<em>Hope that helped!!</em>