​ In Exhibit  3-15, If the Market Price of Good X

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In Exhibit  3-15, if the market price of good X is initially $.50, a movement toward equilibrium requires:

A) no change, because an equilibrium already exists.
B) the price to fall below $.50 and both the quantity supplied and the quantity demanded to rise.
C) the price to remain the same, but the supply curve to shift to the left.
D) the price to rise above $.50, the quantity supplied to rise, and the quantity demanded to fall.