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: I was using my tablet. Sentence 2: I used it for a long time. Sentence 3: All the sudden I was losing battery. Sentence 4: I had hardly any left. Sentence 5: I was upset about it. Choices: a. Low battery. b. Bribe.
a