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 does not connect with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes less sense.

Title: Tired. Sentence 1: Evan said he would come in on a Saturday to work overtime. Sentence 2: He dragged himself out of bed to arrive early. Sentence 3: But at work, he was very tired. Sentence 4: He was not used to working so much. Choices: a. He hardly got any work done at all! b. The entire classroom failed the quiz.
Output:
b