With no explanation, chose the best option from "A" or "B". Lydia is relaxing at home after a very busy week when her sister calls her to ask if she wants to spend the day with her. Lydia wants to spend the day alone.

A: Lydia tells her sister that she is tired and needs to spend some time alone to rest.
B: Lydia tells her sister she already has plans with some friends for the day.
A.