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.
One example is below.
Q: Sentence1: Rick grew up in a troubled household. Sentence2: He never found good support in family, and turned to gangs. Sentence3: It wasn't long before Rick got shot in a robbery. Sentence4: The incident caused him to turn a new leaf. 
 (A) He is happy now. (B) He joined a gang.
A: A
Rationale: As mentioned in fourth sentence, the incident turned a new leaf to Rick's life; so, he must be happy now.
Q: Sentence1: Amy came home from school on her birthday to an empty house. Sentence2: She was upset that everyone had forgotten her special day. Sentence3: She walked sadly into the living room. Sentence4: Suddenly, her friends and family jumped out from their hiding spots. 
 (A) Amy grinned with delight. (B) Amy walked out of the room and left the house.
A:
A