A sporting goods store uses quadratic equations to monitor the daily cost and profit for various items it sells. The store’s daily profit, y, when soccer balls are sold at x dollars each, is modeled by y=6x^2 + 100x - 180.Why is there an interval over which the graph decreases?a. If the store sells more soccer balls, they can decrease the price.b. If the soccer balls are returned for a refund, the store will lose money.c. If the soccer balls are too expensive, fewer will be sold, reducing profit.