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: Unfortunate scale. Sentence 1: Allie had been losing a lot of weight recently. Sentence 2: She decided to weigh herself as a result. Sentence 3: When she looked at the scale she was shocked. Sentence 4: She lost twenty pounds. Choices: a. She was now nearly under one hundred and had to do something about it. b. I was numbed as she warned me that he could turn out the same.
Output:
a