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: Tom was in a new city. Sentence 2: He got a taxi to move around. Sentence 3: Tom was charged a higher rate than normal. Sentence 4: Tom wasn't aware and just paid. Sentence 5: It wasn't until too late that he realized. Choices: a. Going Cheap. b. Expensive Ride.

b