Given the task definition and input, reply with output. 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: The worker entered the data into the spreadsheet. Sentence 2: He made a mistake in one of the cells. Sentence 3: He ran a data analysis. Sentence 4: The results did not make sense. Sentence 5: He checked through the data to find the mistake. Choices: a. Scratch. b. Data.
b