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: Allie was getting engaged. Sentence 2: She told all her friends. Sentence 3: They were not happy for her. Sentence 4: Allie was so disappointed. Sentence 5: She then realized maybe they were not true friends. Choices: a. Tripping over the gown. b. Not happy for the engagement.

b