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: Helping friend move. Sentence 1: One of my closest friends had asked me to help him move. Sentence 2: It was a very hot day and near the end he asked me to stay to eat. Sentence 3: I should have known it would turn into helping unpack his belongings. Sentence 4: We had to search thru all the boxes because he was bad at packing. Choices: a. I left around 2 am but it turned out to be a very fun time. b. Then thankfully she found a charger.
A:
a