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: My coworker's son was allergic to peanut. Sentence 2: One day, one of his classmates had a sandwich. Sentence 3: His classmate offered him the sandwich. Sentence 4: He forgot to asked what was the butter of the sandwich. Sentence 5: After he ate, he begun to scratch his body. Choices: a. Molly Learns To Ride a Bike. b. Peanuts.

b