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: Greg picked up his friend. Sentence 2: They went off road trucking. Sentence 3: The truck got stuck. Sentence 4: Greg couldn't get it out himself. Sentence 5: Greg got it out with his friend'. Choices: a. truck. b. Hair Loss in One Month.

a