I'll give you a question, please answer with step-by-step reasoning process. When meeting a friend, what does one generally do at first?
Options:
- shake hands
- say hi
- smile
- have coffee
- give a hug

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The first things that friends so is say hi.
The answer: say hi.