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.
Q: Title: Summer Fun. Sentence 1: John and Jackie had waited all year for the first day of summer. Sentence 2: They convinced their mom to take them to the beach. Sentence 3: Jessica, their mom, discovered the beach nearby wasn't open yet. Sentence 4: They headed to the pool, but it began raining heavily. Choices: a. Elly suggested a bus instead, and they loved their careless road trip. b. Already in their bathing suits, the family played in the rain instead.
A:
b