Answer:
A: Language with positive connotation.
Step-by-step explanation:
The author thought that they were going to have a bad time but instead they had a lot of fun.
An example: Oh, by the way, the food was delicious. It tasted better than my mom's! (But don't tell her.)
The author is clearly very happy about what has happened, so I think the answer is A: LANGUAGE WITH POSITIVE CONNOTATION.