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 seamlessly connects with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes more sense.

[Q]: Title: Campus. Sentence 1: Tom was now in college. Sentence 2: He had a dorm room and a roommate. Sentence 3: Tom was nervous about meeting his new roommate. Sentence 4: The new roommate could be mean. Choices: a. Tom met his roommate and he was a cool guy. b. I hit those trees many times but I finally learned to ride my bike!
[A]: a

[Q]: Title: Crying at the Park. Sentence 1: Lexi was playing at the park. Sentence 2: Her mother told her it was time to leave. Sentence 3: Lexi started to cry. Sentence 4: Lexi's mother got annoyed. Choices: a. She didn't take Lexi to the park for a month. b. They retaliated by throwing their popcorn at Henry.
[A]: a

[Q]: Title: Dandruff. Sentence 1: Conan was self-conscious about his scalp condition. Sentence 2: He tried to manage the dandruffs the best he could. Sentence 3: But no hair product ever worked for him. Sentence 4: In the end he didn't dare wearing white anymore. Choices: a. Tom unfriended them because of it. b. So he shaved his head to resolve the problem.
[A]:
b