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: Lucy's First Day. Sentence 1: Lucy was excited to go to school. Sentence 2: Today was her first day of kindergarten! Sentence 3: She met her new teacher and classmates. Sentence 4: Lucy loved getting to know her new school. Choices: a. That night, she told her parents all about her day. b. Tom ran up the stairs as fast as he could.
[A]: a

[Q]: Title: The Dinosaur. Sentence 1: Frank loved science toys. Sentence 2: His dinosaur figures were his favorite. Sentence 3: He would make elaborate stories with them. Sentence 4: He played with them for hours until his mom took them away. Choices: a. Josh had a concussion. b. He went to bed right away so he could wake up and play more.
[A]: b

[Q]: Title: Tom the musician. Sentence 1: Tom is a musician who plays guitar. Sentence 2: He joined a band that became very popular. Sentence 3: Tom had to quit the band because his foot hurt too much to stand. Sentence 4: The band came to his house and recorded music. Choices: a. They made a record that's now playing on the radio. b. Steel died about three years ago.
[A]:
a