Given the task definition and input, reply with output. 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 does not connect with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes less sense.

Title: Buying a trumpet. Sentence 1: I wanted to learn a new instrument, and decided to buy a trumpet. Sentence 2: After doing research online, I found a brand I liked. Sentence 3: I drove to the local music store and asked the clerk if they had any. Sentence 4: He showed me a few of the trumpets they had. Choices: a. She ended up getting a weird rash on her hand. b. I bought one of them and took it home.
a