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 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: Thanks, Neighbor. Sentence 1: On the way to work this morning, I stepped in a pile of dog poo. Sentence 2: The pile was placed on my porch by my neighbor. Sentence 3: There was a note with it that said to keep my dog out of her yard. Sentence 4: I don't have a dog and I've never had a dog. Choices: a. I think my mom is going to become addicted to surgery. b. Now I've got to figure out the best way to get back at her for this.
b