The value of price elasticity of demand for a normal commodity is negative because it indicates:
A.
a. the inverse relationship between the price and the quantity demanded for the commodity.
B.
b. that the value of the consumer surplus is negative for a normal good.
C.
c. that the changes in quantity demanded are much less compared to the changes in price for a normal good.
D.
d. the direct relationship between price and consumer surplus from the commodity.