I denied going back to Nepal.. The counselor contacted my current client and visa was based on the contract with the client... just for 3 months. (Lucky me).
Yeah if the visa is denied.... you won't be able to enter USA, some guys say, handle the I-20 from I-797 at POE and Enter to USA (Some guys did in the past), but it will not work now, believe me..
Don't get dilemma, just sharing my experience.

Good luck !!!