K Use a system of linear equations to solve the following problem A new restaurant is to contain two-seat tables and four-seat tables. Fire codes limit the restaurant's maximum occupancy to 72 customers. If the owners have hired enough servers to handle 21 tables of customers, how many of each kind of table should they purchase? Write a system of linear equations using the given information. Choose correct answer below. OA. 2x-4y=72 x-y=21 x-y=72 OB. 2x-4y=21 2x+4y=72 OC. x+y=21 x+y=72 OD. 2x+4y=21 They should purchase two-seat tables and four-seat tables