In this task, you're given the title and three arbitrary sentences out of a five-sentence story. You are also given three additional sentence options, a, b, and c, that may or may not belong to the story. Your job is to pick the two options that seamlessly connect with the rest of the story and their positions in the sentence order of the story; note that the selected choices may fit into the story at any point. Your answer must be in the form of '2a, 5b', where '2a' means the candidate sentence 'a' will be inserted as the 2nd sentence in the story. The answer must also be in the order of the selected choices, i.e., '2a, 5b' is allowed, and '5b, 2a' is not allowed. If options are equally plausible, pick the ones that make more sense.

Title: They studied and learned that cats have a body temperature of over 102. They found an electric cat bed that heats to 102 when a cat is in it. The cats do sleep in the bed every night and some daytime too. Choices: a. The couple decided to acquire two cats for pets. b. They bought the heated cat bed. c. Ashley hated her brother because of it.
1a, 4b