f1 visa experience rejection

[usap1]

me: good morning.........
vo: morning
vo: which universities you applied?
me: said (6 univ)
vo: what is your gre
me: 289
vo: who is your sponsor?
me: my father
vo: what does he do?
me: cultivator and had business
vo: cultivator means ?
me: explained
vo: sorry! you are not qualified..........


anyone please point out my reason of rejection