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: Martha is never at home to cook meals so she eats fast food a lot. Sentence 2: Recently she realized she was gaining a lot of weight. Sentence 3: Martha wanted to lose weight, so she signed up for food delivery. Sentence 4: A company delivers a box of fresh ingredients to her door every week. Sentence 5: Now Martha cooks her own meals and she's finally losing weight. Choices: a. Two Failed Experiments on a Hot Day. b. Trying Something New.

b