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: Liz enjoyed going for runs. Sentence 2: She went out for a run around the block but wore the wrong shoes. Sentence 3: These shoes gave her a blister. Sentence 4: It took her a whole week to be able to run again. Sentence 5: Liz now only owns running shoes for casual wear. Choices: a. Problem solved. b. The Rug.

a