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: The Bathroom. Sentence 1: The new homeowners were excited to renovate their bathroom. Sentence 2: The retiled the floor. Sentence 3: They also replaced the vanity. Sentence 4: When they were finished, they stood back and smiled at their hard work. Choices: a. Danny paid the technician to replace the battery. b. It was a huge sense of accomplishment!
a