If the quantity demanded of a good is Q when the price for the good is P, the price elasticity of demand for that good at that point is:
A.(P/Q) × (1/slope)
B.(Q/P) × (1/slope)
C.Q × P × (1/slope)
D.(P/Q) × (slope)
正确答案：(P/Q) × (1/slope)
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