Marigold Delight sells chocolate-dipped fruit to local restaurants. Marigold Delight delivered 30000 chocolate dipped strawberries to customers in May and 26000 in June. Delivery costs for the two months were $1500 and $1300, respectively. Using these two months data, the delivery cost function is best estimated as

($3.00 x number of strawberries) + $520.

($0.05 x number of strawberries) + $400.

($0.05 x number of strawberries) + $0.

($0.03 x number of strawberries) + $600.