Given the task definition and input, reply with output. In this task, you're given five sentences, numbered 1 through 5, and two options a and b for possible titles for the story. Your job is to choose the title that better fits the story. Indicate your choice by 'a' or 'b'.

Sentence 1: Kate was excited for Easter. Sentence 2: She had assembled great Easter Baskets for her kids. Sentence 3: They were full of candy and toys. Sentence 4: On Easter Sunday, the kids tore into the baskets. Sentence 5: They were thrilled with their gifts. Choices: a. The Easter Basket. b. The Mask.
a