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: Luther is running low on fuel. Sentence 2: He keeps his car running. Sentence 3: Luther has no money for gas. Sentence 4: He tries to drive it home. Sentence 5: He breaks down on the side of the road and calls for help. Choices: a. Luther runs out of gas. b. Sick.

a