Is this against discrimination laws?

[Nicole Wood]

We are currently looking to rent out our single family home starting in June. We had several people come and look at the house and are very interested. I told everyone I was doing first come first serve (if they qualify of course). However, today I got an offer from someone who wants to pay the entire year's rent up front and sign a 1 year lease. Is it discriminating if I choose this person over the others??

Thanks!