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: Marcus was travelling home from the store. Sentence 2: He had to take a cab because he didn't have a car. Sentence 3: When the cab arrived he dug into his pocket for some cash. Sentence 4: Suddenly he realized he had no money on him. Sentence 5: Luckily the cab driver didn't mind and offered to pay for him. Choices: a. Indoors. b. No Cab Fare.

b