Suppose the price of Twinkies decreases from $1.45 to $1.25 and, as a result, the quantity of Twinkies demanded increases from 2,000 to 2,200. Using the midpoint method, the price elasticity of demand for Twinkies in the given price range is:
a. 2.00.
b. 1.55.
c. 1.00.
d. 0.64.