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.

Example Input: Title: Books. Sentence 1: Tom was a freshman in college. Sentence 2: He was struggling financially. Sentence 3: He needed to buy books for the new semester. Sentence 4: He could not afford the physical text books. Choices: a. He felt so relieved. b. He purchased the eBook versions and saved money.
Example Output: b

Example Input: Title: Sunset Cruise. Sentence 1: Tim and his wife were excited. Sentence 2: They had hired a sailboat for the day and were going to sail. Sentence 3: They had timed it so they would be sailing with the setting sun. Sentence 4: Tim and his wife stood on the bow of the boat and looked on. Choices: a. The sunset was beautiful and they were happy. b. Jack was extremely disappointed.
Example Output: a

Example Input: Title: Counseling. Sentence 1: Anna knew she needed help with her debts and credit score. Sentence 2: She had always wanted credit counseling. Sentence 3: It was expensive, so she had never gotten it. Sentence 4: But finally she made an appointment with a financial advisor. Choices: a. Em emerged a much different person. b. He helped her greatly and Anna was so happy she'd done it!
Example Output:
b