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.

Title: The kitty. Sentence 1: We had been in our new house about a week or two when he came. Sentence 2: We were talking in the living room with the windows open. Sentence 3: And we heard lots of meows and looked around. Sentence 4: The kitty had jumped up on his hind legs to look in the window. Choices: a. We opened the door and he repaid us with pets and affection. b. Then finally popped the question and she said yes.
a