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.

Title: Rain. Sentence 1: Regina loves the rain. Sentence 2: She decided to finish her book while it rained today. Sentence 3: Regina managed to finish five chapters. Sentence 4: But the rain was so soothing that she fell asleep. Choices: a. Although she didn't finish her book, she was happy with her nice nap. b. He heads to Atlanta to have fun and sin.
a

Title: Exam. Sentence 1: It was Kia's first year studying French. Sentence 2: She fully expected to fail her exam. Sentence 3: But when she got her paper back, she was surprised. Sentence 4: She had scored a B+ in her French class! Choices: a. Kia was very proud of herself. b. He ended up having to call a plumber to fix the clog.
a

Title: Full Flight. Sentence 1: Tom bought a plane ticket. Sentence 2: At the airport they told him the flight was full. Sentence 3: Tom was upset and told them he demanded to be let on. Sentence 4: The airline didn't care and put him on another flight instead. Choices: a. Joey had to wipe his computer clean several days later due to a virus. b. Tom made sure not to fly with them again in the future.
b