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.
Q: Title: Walk Her Dog. Sentence 1: The woman walked her dog. Sentence 2: The dog went to the bathroom in the neighbor's yard. Sentence 3: The woman picked up the mess in a bag. Sentence 4: She left the bag on here route to grab on the way home. Choices: a. On her way home she forgot to pick up the bag. b. She was happy that she had an excuse to miss school that day.
A:
b