Peyton wrote this expression to describe the amount he paid for each sandwich that costs the same amount. Which situation could be described by this expression? A. Peyton knows he paid $15 for a sandwich. He does not know the total amount he spent. B. Peyton knows he paid a total of $15. He does not know how much he paid for drinks. C. Peyton knows he paid a total of $15. He does not know how many sandwiches he bought. D. Peyton knows that each sandwich cost $15. He does not know how many sandwiches he bought.