Each day Larry needs at least 10 units of vitamin A, 12 units of vitamin B, and 20 units of vitamin C. Pill #1 contains 4 units of A and 3 of B. Pill #2 contains 1 unit of A, 2 of B, and 4 of C. Pill #3 contains 
of A, 1 of B, and 5 of C.Pill #1 costs 5 cents, pill #2 costs 10 cents, and pill #3 costs 1 cent. How many of each pill must Larry take to minimize his cost?
A. P1 = 0, P2 = 0, P3 = 12
B. P1 = 1, P2 = 0, P3 = 9
C. P1 = 3, P2 = 0, P3 = 4
D. P1 = 2, P2 = 0, P3 = 6
Answer: A
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