You will be given a definition of a task first, then some input of the task.
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: Frozen Goods. Sentence 1: Bill ordered food from a taco place. Sentence 2: When he got home, he placed his drink in the freezer. Sentence 3: It stayed in the fridge overnight while Bill was asleep. Sentence 4: When he woke up, he searched for his drink. Choices: a. Gary finished vacuuming his house. b. It remained frozen in the freezer.
Output:
b