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: The Halloween Party. Sentence 1: Susan was invited to a Halloween party. Sentence 2: She planned her costume for weeks. Sentence 3: The day of the party, Susan donned her costume. Sentence 4: Everyone loved Susan's costume. Choices: a. Susan won first place in the costume contest. b. From then on Tom didn't stuff himself as much.
Example Output: a

Example Input: Title: The Love Letter. Sentence 1: Kevin was playing a joke on his sister. Sentence 2: He wrote a love letter and signed it from her crush. Sentence 3: Kevin slipped the note in her backpack. Sentence 4: His sister read the note. Choices: a. She recognized Kevin's handwriting and was mad at him. b. She made Kennedy help her clean the dresser.
Example Output: a

Example Input: Title: Bat. Sentence 1: Kane heard a noise in her attic. Sentence 2: She went up to check it out. Sentence 3: It was a huge bat! Sentence 4: She screamed and ran downstairs. Choices: a. Then she got her husband to get rid of it. b. He didn't tell her where he was going so she got worried.
Example Output:
a