You will be given a definition of a task first, then some input of the task.
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'.

Sentence 1: Ron hadn't lived near a big store for a long time. Sentence 2: The first thing he did was buy a lot of ice cream. Sentence 3: He binged out and ate it all in one sitting. Sentence 4: Ron felt very sick for days after that. Sentence 5: He swore to have more self-discipline no matter how close a store was. Choices: a. Working On Up. b. Binge.
Output:
b