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: Waves and Sand. Sentence 1: Bruce went out to the beach for the weekend. Sentence 2: He brought his surfboard and wetsuit. Sentence 3: Bruce couldn't find a big enough wave to surf for a while. Sentence 4: Suddenly a large swell appeared and he decided to chase it. Choices: a. He underestimated the wave and wound up being thrown almost to shore. b. She bought the new truck after the test drive.
A:
a