Definition: 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'.
Input: Sentence 1: Ian found out that Glady cheated on her. Sentence 2: She talked to him and asked to overlook her infidelity. Sentence 3: He wasn't convinced and arranged a divorce. Sentence 4: Since he was the family's breadwinner, he won sole custody of the kids. Sentence 5: Glady lived by herself in a small apartment. Choices: a. Divorce. b. The Birthday Cake.

a