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.

[Q]: Title: Vegetables. Sentence 1: The boy ate his vegetables. Sentence 2: His mother rewarded him. Sentence 3: The boy began to expect rewards. Sentence 4: The mother stopped rewarding the boy. Choices: a. In a few months, she was no longer afraid to go outside. b. The boy refused to eat vegetables.
[A]: b

[Q]: Title: New Locks. Sentence 1: Ronny had broken up with his girlfriend. Sentence 2: He kicked her out the house. Sentence 3: Ronny's girlfriend refused to give him back the house key she had. Sentence 4: Ronny went to the hardware store for a replacement lock. Choices: a. It was ruined and he had to order pizza. b. He replaced the locks and keys.
[A]: b

[Q]: Title: Cookies. Sentence 1: Mom decided to make cookies. Sentence 2: She mixed the ingredients together and put them in the oven. Sentence 3: She forgot to set the oven timer. Sentence 4: Mom forgot about the cookies. Choices: a. When she remembered the cookies, they were already burned. b. Tom decided not to buy it.
[A]:
a