When the Price of Cosmopolitan Magazine Decreases from $5 to $3,the

Multiple Choice

When the price of Cosmopolitan magazine decreases from $5 to $3,the quantity demanded increases from 600,000 to 1,000,000 copies each month.Using the midpoint method,the price elasticity of demand equals

A) 1.
B) 3.
C) 2.
D) 1/3.
E) 1/2.