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: Job interviews. Sentence 1: Jonah wanted to hire the best employee for his firm. Sentence 2: He looked at resumes and called in the best. Sentence 3: As interviews went by he was getting desperate. Sentence 4: He couldn't find anyone good enough. Choices: a. But Paul was bad at his job and his brother fired him. b. Until at the end, the perfect candidate shown up and he hired her.
[A]: b

[Q]: Title: Contaminated Shorelines. Sentence 1: The Roberts went to beaches along the Gulf Coast every summer. Sentence 2: They loved the beach and had a lot of fun on them through the years. Sentence 3: Unfortunately, there was an oil spill off the coast this year. Sentence 4: Oil was washing ashore and killing all of the wildlife. Choices: a. They decided not to go this year. b. But the radio interrupted them, saying a war had broken out.
[A]: a

[Q]: Title: Bike Rides. Sentence 1: Hillary learned to ride a bike yesterday. Sentence 2: I was worried that she would fall, but her big brother was careful. Sentence 3: He ran next to her bike while she pedaled. Sentence 4: Soon, she was riding in circles! Choices: a. Her brother got his bike out and they rode around together. b. The distance made them grow apart and they broke up.
[A]:
a