In this task, you're given the title of a five-sentence story, the first four sentences, and two options for the fifth sentence as a and b. Your job is to pick the sentence option that seamlessly connects with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes more sense.
Q: Title: New Guitar. Sentence 1: I found a guitar on the side of the street. Sentence 2: It was missing all of its strings. Sentence 3: I went to the store and bought some new strings. Sentence 4: When I got home I installed the strings. Choices: a. After one bite, he knew this was the best pick yet. b. After the strings were on I started rocking out on my new guitar.
A:
b