Thanks Claudia, I didn't notice that button I guess I should've checked the FAQ's.
Actually, I posted it under the wrong language. I reposted it in a different language and got the answer.
Thanks for your help!
Claudia Iglesias wrote:
These are the options that you have for closing a question, you can close without grading.
Grade/Decline --> Close without grading
Before doing that I'd ask you...are you sure that none of the answers deserves at least one KudoZ?
4: Answer was acceptable, explanation was good, reference was provided (or not needed)
3: Answer was acceptable, explanation was good, but reference was lacking
2: Answer was acceptable
1: Answer was somewhat helpful