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: Off-roading. Sentence 1: Sam bought a new four wheel drive truck. Sentence 2: And he saw videos of it being driven through off road courses. Sentence 3: There were no off road courses near his house though. Sentence 4: So he decided to drive through a private forest area. Choices: a. But Sam's driving caused thousands of dollars worth of damage. b. Tom sold it for thousands of dollars.
b