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: Violence isn't the answer. Sentence 1: Jack was always getting into trouble at school. Sentence 2: He was never told off for violence normally. Sentence 3: One day, another kid pushed Jack into the lockers. Sentence 4: Jack reacted by punching the kid back. Choices: a. Hence Fred was thrilled. b. Jack was suspended and learned that violence doesn't solve anything.
a