Why is the elasticity of demand written as a positive value even though price and quantity demanded are inversely related?
A) The price elasticity of demand shows only the effect of an increase in price.
B) It is a convention to use positive values for elasticity.
C) Elasticity is always positive, regardless of the relationship between price and quantity demanded.
D) It indicates the responsiveness of quantity demanded to changes in price, irrespective of the direction of the change.