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: Carl Paints His Kitchen. Sentence 1: Carl decides that his kitchen needs to be painted. Sentence 2: He buys some paint and a paintbrush. Sentence 3: Carl works hard to paint the kitchen over the next few days. Sentence 4: Finally it is done. Choices: a. John was glad he had cleaned out his car. b. Carl is happy that he has painted his kitchen.
a