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: Sam purchased a brand new car from his local dealership. Sentence 2: When he drove it home, it started to make weird noises. Sentence 3: Sam determined the noise was coming from the engine. Sentence 4: He took it back to the dealership and explained to them the problem. Sentence 5: Sam was able to get his car replaced due to a faulty engine. Choices: a. Robbie's Wreck. b. Replacement Car.

b