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: Test. Sentence 1: Sara has a big English test tomorrow. Sentence 2: She has not studied at all. Sentence 3: Her test counts for half her grade. Sentence 4: Sara decided to pull an all- nighter. Choices: a. The tutor helped him pass the exam. b. When she got to school, she slept through her test.
Output:
b