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: Disappointing friends. Sentence 1: Gary didn't like to go to bars much. Sentence 2: He didn't drink a lot, so he would always over do it when he did. Sentence 3: For his birthday, his friends took him to a bar. Sentence 4: He was very disappointed, as his friends knew he didn't like them. Choices: a. She ended up with second place. b. Gary then realised that he needed to find new friends.
[A]: a

[Q]: Title: Autistic Grandson. Sentence 1: My old boss has an autistic grandson. Sentence 2: Paul is five and cannot talk. Sentence 3: He was getting treatment but lately has been acting out. Sentence 4: Recently the family brought in a dog as a service animal. Choices: a. So far Paul has been calmer. b. Tom was never able to find it.
[A]: b

[Q]: Title: The lost cow. Sentence 1: A farmer bred cows on the farm. Sentence 2: One day he found our one cow was missing. Sentence 3: He took his dog Pugsley. Sentence 4: They tried to find the cow. Choices: a. She apologized when she realized it was just a large woman. b. Pugsley found a cow in the woods.
[A]:
a