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.

Title: Dementia. Sentence 1: My 99 year old neighbor Sam has early dementia. Sentence 2: He is losing a lot of short term memory. Sentence 3: When we talk it is very strange. Sentence 4: He keeps me asking me the same questions about my life. Choices: a. I just answer him, knowing he will ask again the next day. b. On the walk back to the car, Emily picked a beautiful bouquet.
a