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: John knew his girlfriend was upset. Sentence 2: He thought buying her flowers would cheer her up. Sentence 3: He got a big bouquet. Sentence 4: John's girlfriend loved the gesture. Sentence 5: It made her happier. Choices: a. A new friend. b. Giving Flowers.

b