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: Gerold like to invent new things. Sentence 2: He usually spent all his weekend in his garage inventing something. Sentence 3: One day, he mixed the wrong ingredients together. Sentence 4: The whole garage blew-up. Sentence 5: Gerold died, but his invention was sought after by the government. Choices: a. Inventor. b. Song.
a