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: One year my school offered us a field trip. Sentence 2: I wasn't completely sure if I was going to go so I asked some friends. Sentence 3: My friends told me they would likely be going so I considered it too. Sentence 4: When the deadline for the paperwork approached I still wasn't sure. Sentence 5: I ended up asking my best friend if he was going and I went with him. Choices: a. Birthday. b. Field trip.

b