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.

[EX Q]: Title: A New Dress. Sentence 1: Joanna was very excited. Sentence 2: Today was her birthday. Sentence 3: Her mother took her out to go shopping. Sentence 4: They went into a clothes store and tried on dresses. Choices: a. Joanna got a beautiful new dress and was so happy. b. Her mom said no.
[EX A]: a

[EX 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!
[EX A]: a

[EX Q]: Title: Flat Tire. Sentence 1: Sam was driving around. Sentence 2: He noticed that the road felt bumpier. Sentence 3: He felt every small thing. Sentence 4: Eventually he pulled over and noticed he had a flat tire. Choices: a. Tom picked it up and was very thankful. b. He replaced it with a spare.
[EX A]:
b