For every cent decrease in price of a gallon of gasoline, a station sells 250 more gallons per day. The station normally sells 3000 gallons of gasoline a day at $1.09 per gallon. Which of the following expressions represents the number of gallons of gasoline sold per day if the cost is reduced by x cents per gallon? （ ）
A.3,000(1.09-x)
B.1.09(250x+3000)
C.(1.09-x)(250x+3000)
D.1.09-x
E.3000+250x