Read the following context and choose the best option to answer the question.
Context: I threw a party for my boss at work to mark his 10 year anniversary for opening up his own business . It was a very small event , I even baked the cake . Thing is , the next day he barely spoke to me . He was even rude at one point .
Question: Why did they throw their boss a birthday party ?
Options: 
- None of the above choices .
 - They wanted their boss to feel better .
 - They wanted to do something nice for their boss .
 - They knew their boss would n't like the party .


They wanted to do something nice for their boss .