The demand and supply equations for a commodity are given respectively as D = 20 - 1/2P; S = 8 + 1/4P. Recalling that at equilibrium, D = S, the equilibrium (P) and quantity (Q) can be obtained as

• A.P = 12, Q = 16
• B.P = 15, Q = 10
• C.P = 12, Q = 14
• D.P = 16, Q = 12
• E.