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: The Movie. Sentence 1: The kids huddled around the tv. Sentence 2: They were going to watch their favorite movie. Sentence 3: The opening credits started and they got very excited. Sentence 4: They loved movie night! Choices: a. We snuck out of the R rated movie. b. They stayed up late to finish it.
Output:
b