In this task, you're given four sentences of a story written in natural language. The given story is not complete and your job is to complete the story by selecting one of the sentence choices from (A) and (B), such that the story sounds fully coherent.

Example Input: Sentence1: I came into the library and took a seat. Sentence2: When I looked around, I noticed a kid. Sentence3: He was staring at me for a while. Sentence4: I became frustrated and got up from by seat.
(A) I didn't mind what the kid was doing. (B) I asked him what his problem was.
Example Output: B

Example Input: Sentence1: Alexia was excited to get a new dog. Sentence2: She had wanted a new dog for ages. Sentence3: Finally her parents agreed to get her one. Sentence4: They drove her to the kernel to pick one up.
(A) Alexia fell in love with a shaggy dog at the kennel. (B) Alexia cried because she wanted a cat instead.
Example Output: A

Example Input: Sentence1: Yolanda hates roller coasters. Sentence2: Katie does not understand why. Sentence3: She decided to force Yolanda to ride one with her. Sentence4: Yolanda vomited all over Katie.
(A) Katie was the happiest she had ever been. (B) Katie regretted forcing Yolanda to go on the ride.
Example Output:
B