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: Missed train. Sentence 1: Suso hated being late. Sentence 2: So she woke up as early as possible. Sentence 3: Ultimately though, she missed the train. Sentence 4: Suso was bummed. Choices: a. Lily's dog walking business is very productive and she is happy. b. She had to take a cab instead.
[A]: b

[Q]: Title: Dance. Sentence 1: Aaron was practicing new trendy dance moves. Sentence 2: He stood in front of his mirror to dance. Sentence 3: He was getting really into it. Sentence 4: All of a sudden, his older sister walked in. Choices: a. She laughed at Aaron for five minutes. b. It was basically empty by March.
[A]: a

[Q]: Title: Jacket. Sentence 1: Koya left her jacket at school. Sentence 2: She was sad because it was her favorite one! Sentence 3: She was sure someone must have taken it. Sentence 4: But in the morning, there it was in the Lost & Found! Choices: a. Koya was so happy to get it back! b. They were successful.
[A]:
a