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: Spoiled milk. Sentence 1: Kelsi went downstairs for breakfast. Sentence 2: She poured a bowl of cereal. Sentence 3: She then got the milk. Sentence 4: But after pouring it she saw it was thick and curdled. Choices: a. A decade later, he was directing Hollywood features. b. Kelsi had to throw it out and get another one.
Example Output: b

Example Input: Title: New Locks. Sentence 1: Ronny had broken up with his girlfriend. Sentence 2: He kicked her out the house. Sentence 3: Ronny's girlfriend refused to give him back the house key she had. Sentence 4: Ronny went to the hardware store for a replacement lock. Choices: a. It was ruined and he had to order pizza. b. He replaced the locks and keys.
Example Output: b

Example Input: Title: The Road Trip. Sentence 1: I decided to go on a road trip to Utah to Mount Zion. Sentence 2: My friend showed interest, so I invited him to go with me. Sentence 3: When the day finally arrived, I drove to go pick up my friend. Sentence 4: Happy and waiting with his luggage, he jumped inside and off we went. Choices: a. He delivered all the passengers to their destination safely. b. Two friends with nothing but the road ahead and smiles to be shared.
Example Output:
b