Solve the Linear Programming Problem

Multiple Choice

Solve the linear programming problem.
-A doctor has told a patient to take vitamin pills. The patient needs at least 12 units of vitamin A and atleast 8 units of vitamin D. The red vitamin pills cost 20¢ each and contain 3 units of A and 1 unit of D. Theblue vitamin pills cost 35¢ each and contain 2 units of A and 2 units of D. To avoid indigestion, the patientshould take no more than 6 red pills and no more than 9 blue pills. How many pills should the patient takeeach day to minimize costs?

A) 2 red and 3 blue
B) 6 red and 1 blue
C) 0 red and 9 blue
D) 6 red and 9 blue