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.
Q: Title: Chad's Workout. Sentence 1: Chad decided he wanted to lose weight. Sentence 2: So he went on a diet and started exercising. Sentence 3: After working out for several months, Chad started to notice. Sentence 4: He was getting buffer and more leaner. Choices: a. This raised Chad's confidence ten fold. b. Brad's neighbors were very nice and gave him back his ball.
A:
b