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: Chubby. Sentence 1: Anna had always liked her curvy figure. Sentence 2: Then one day she overheard some boys joking about her. Sentence 3: They made fun of her chubby face and features. Sentence 4: For a moment Anna was devastated - but then she recovered. Choices: a. She was relieved when she pulled up to her dormitory. b. She resolved not to let anyone else affect her self-esteem!
Output:
a