Instructions: 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.
Input: Title: Hard at work. Sentence 1: Yesterday I was working very hard at work. Sentence 2: I was working so hard that I had lost track of time. Sentence 3: I worked right through my lunch break. Sentence 4: When I realized that, I was so hungry I couldn't work anymore. Choices: a. I asked my boss to take a break and he said yes. b. I had bought so many things that I had to make two trips.
Output:
a