Which of the following pairs of equations describes the supply and demand curves given in the accompanying demand and supply tables?PriceQuantity SuppliedQuantity Demanded$003$102$211$320$430$540
A. Qs = P ? 1; Qd = 3 ? P, respectively
B. Qs = 1; Qd = 1 ? 3P, respectively
C. Qs = P; Qd = 3 ? 3P, respectively
D. Qs = P + 1; Qd = 3 ? P, respectively
Answer: A
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