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: Cold Night. Sentence 1: It was the dead of winter. Sentence 2: Sam and his boyfriend couldn't afford the heat. Sentence 3: They had to huddle close to sleep warm at night. Sentence 4: It brought them closer together. Choices: a. They actually found it more comfortable that way. b. Kate loved anything that was free.
A:
a