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.

Input: Consider Input: Sentence1: Frank filled up dozens of water balloons to throw at this sister. Sentence2: Little did he know she was ready for him. Sentence3: When he started the attack, she pulled out a huge water gun. Sentence4: It was much more effective than his balloons.
(A) Frank enrolled in a marine biology class. (B) Frank bought a water gun the next day.

Output: B

Input: Consider Input: Sentence1: Rhonda bought some new pink socks to wear. Sentence2: She loved them. Sentence3: When she took them off, though, they got mixed in with other laundry. Sentence4: On laundry day she washed her clothes without sorting them.
(A) Rhonda then decided to eat lunch and return emails. (B) Sadly, they were ruined and Rhonda had to buy a new pair.

Output: B

Input: Consider Input: Sentence1: Annabelle loves to sing. Sentence2: She sings in her school choir. Sentence3: Mary noticed Annabelle's great singing voice. Sentence4: Mary asked Annabelle to be in her band.
(A) Annabelle said yes and was excited for the opportunity. (B) Annabelle was very offended.
Output: A