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: Tom wanted a Chemistry set for Christmas. Sentence2: His mom said it was too dangerous for a little boy. Sentence3: Tom asked for a puppy instead, and his mom suddenly changed her mind. Sentence4: Tom didn't understand why, but he didn't care.
(A) He was happy to get the Chemistry set. (B) He was disappointed to receive the Chemistry set.
Example Output: A

Example Input: Sentence1: A man named Nick was walking down the street. Sentence2: He noticed a small leather wallet in the grass. Sentence3: He picked it up and it was filled with cash. Sentence4: Nick decided to give the wallet to the police station.
(A) The police never found the owner so they gave it to Nick. (B) Nick then kept the wallet.
Example Output: A

Example Input: Sentence1: The first day of school I walked there with two of my closest friends. Sentence2: We were all very nervous. Sentence3: When we got to school we checked the class list for third grade. Sentence4: All three of us were assigned to the same classroom!
(A) We couldn't believe our luck. (B) All three of us were very disappointed.
Example Output:
A