Q: 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: New Pet. Sentence 1: Rosemary had been begging her mom for a pet. Sentence 2: She however didn't know what pet she wanted. Sentence 3: At the pet store she looked at dogs, cats, birds, and fish. Sentence 4: Rosemary was on the verge of leaving when an animal caught her eye. Choices: a. Cob ignored them and kept playing the song he was passionate about. b. See found out it was a hamster and she ended up naming it speedy.
A:
b