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: Rhonda Buys New Shoes. Sentence 1: Rhonda notices that her work shoes are getting worn out. Sentence 2: She decides to buy a new pair. Sentence 3: Rhonda buys a wonderful pair of shoes for work. Sentence 4: Many co workers complement her new shoes. Choices: a. She is happy that she finally clipped her toenails. b. She is happy that her work shoes are no longer worn out.
Example Output: b

Example Input: Title: Laura Shaves Her Head. Sentence 1: Laura decided that she wanted to have a new bold look. Sentence 2: She thought about cutting her hair really short. Sentence 3: Her friends and coworkers discouraged her. Sentence 4: However, she decided to shave all of her hair off. Choices: a. Laura was very pleased with her new look. b. She told him to get out of their house.
Example Output: a

Example Input: Title: Flexibility. Sentence 1: Tom was very inflexible. Sentence 2: He wanted to increase his flexibility. Sentence 3: He began a consistent stretching and exercise program. Sentence 4: He saw his flexibility increase. Choices: a. She redesigned her whole line removing all animal testing. b. He was happy about increasing his flexibility.
Example Output:
b