Q: 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: Raw Hamburger. Sentence 1: My sister-in-law B loved to nibble on raw hamburger. Sentence 2: One day we were on vacation together. Sentence 3: B made hamburgers for us. Sentence 4: Later at night she had stomach cramps. Choices: a. He cancelled his subscription. b. I think it was because she ate raw hamburger.
A:
b