Detailed Instructions: 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: Online Dating. Sentence 1: Liam signed up for an internet dating website. Sentence 2: He went on a date with a girl named Shelly. Sentence 3: Shelly talked the whole time about her ex-boyfriends. Sentence 4: Liam noticed Shelly had a piece of food stuck to her front tooth. Choices: a. Liam never told Shelly about the food. b. Nathan's mom climbed up to the roof to reach the rocket.
A:
a