This is a bit of a difficult choice, because neither one is preferred strongly to the other, but naturally, people tend to pick number three, because they liked it a little better than number four.
Onda vam damo izbor: "Slučajno imamo neke reprodukcije viška u ormaru. Kao nagradu, jednu možete ponijeti kući. Slučajno imamo broj tri i broj četiri." kažemo subjektu.