Trudy’s ice cream shop offers two sizes of ice cream: single scoop and double scoop. On her best day of the year, Trudy sold 256 single scoops and 312 double scoops. If s represents the price of a single scoop and d represents the price of a double scoop, which of the following equations can be used to model the amount of money (T) Trudy’s ice cream shop made on her best day?