A deli sells 480 sandwiches per day at a price of $4 each. { (:) (A)Amarket survey shows that for every $0.10 reduction in the price, 40 more sandwiches will be sold. How much should the deli charge in order to maximize revenue? The deli should charge $|:| for a sandwich to maximize revenue. (Round to the nearest cent as needed.) (B) A different market survey shows that for every $0.20 reduction in the original $4 price, 5 more sandwiches will be sold. Now how much should the deli charge in order to maximize revenue\"? Now the deli should charge $D fora sandwich to maximize revenue. (Round to the nearest cent as needed.)