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: Building a Fence. Sentence 1: Terrence had been hired by his aunt to build a privacy fence. Sentence 2: He tried to focus on work, but couldn't ignore the sweltering heat. Sentence 3: When a pretty neighbor offered water, he immediately left the fence. Sentence 4: Before he knew it, he'd spent two hours at the girl's house flirting. Choices: a. Miley made her first bad grade. b. His aunt was furious, and docked his pay for the day.
a