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: Painting the Room. Sentence 1: Mary wanted to paint her living room. Sentence 2: She went to the store and bought a gallon of paint. Sentence 3: Mary brought the paint home and set it in the living room. Sentence 4: She laughed as she realized she forgot the paint brushes. Choices: a. The branches ripped it apart. b. Mary went back to the store to buy the paint brushes.
[A]: a

[Q]: Title: Going to the Park. Sentence 1: Ken went to the park to walk around. Sentence 2: He needed to clear his head. Sentence 3: The air was crisp and the mood was lazy. Sentence 4: Ken enjoyed walking on the soft grass. Choices: a. It helped him get in a better state of mind. b. She got better but never made the same mistake again.
[A]: b

[Q]: Title: Cake. Sentence 1: Ava is nervous about her sweet sixteen tomorrow! Sentence 2: Ava never confirmed on all the preparations for the party. Sentence 3: Ava mom assures her that her party will be perfect. Sentence 4: Ava calls and confirms everything but forgot the cake. Choices: a. The day of the party Ava mom surprises her with the cake she picked. b. He ended up marrying her and moving to the small town.
[A]:
b