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: I noticed we were out of milk. Sentence 2: I went to the store to buy some. Sentence 3: When I got home, everyone started drinking it. Sentence 4: I didn't have enough left for cereal. Sentence 5: I had to go back to buy more. Choices: a. The Donuts. b. Milk.

b