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: The cabin was so cold. Sentence 2: Tom was trying to get the heater running. Sentence 3: It was banging and clanging but wouldn't light. Sentence 4: Tom was frustrated and cold. Sentence 5: He finally lit a fire instead. Choices: a. The Heater. b. Flu.

a