Given the task definition and input, reply with output. 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: Jeff get sick. Sentence 1: Jeff is snowed in his cabin. Sentence 2: Jeff is scared he will never get out. Sentence 3: All the sudden the power goes out. Sentence 4: Jeff is sitting there in the cold he covers up but it's not use. Choices: a. Cathy knew she would not get a good spot at the concert. b. Jeff gets so cold he gets sick.
a