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: Fred made an account for a crowd funding website. Sentence 2: And he asked for donations to pay of his student loans. Sentence 3: But instead, he used the money to take a trip around the world. Sentence 4: And when donors found out, they were furious. Sentence 5: But there was nothing they could do to get their money back. Choices: a. Scam. b. Unlocked.

a