Solve the linear programming problem.
The Acme Class Ring Company designs and sells two types of rings: the VIP and the SST. They can produce up to 24 rings each day using up to 60 total man-hours of labor. It takes 3 man-hours to make one VIP ring and 2 man-hours to make one SST ring. How many of each type of ring should be made daily to maximize the company's profit, if the profit on a VIP ring is $40 and on an SST ring is $35?
◦ 12 VIP and 12 SST
◦ 18 VIP and 6 SST
◦ 16 VIP and 8 SST
◦ 14 VIP and 10 SST