The price elasticity of demand increases with the length of the period considered

This is the full question

The price elasticity of demand increases with the length of the period considered because

a. consumers' incomes will increase over time.

b. the demand curve will shift outward as time passes.

c. all prices will increase over time.

d. consumers will be better able to find substitutes

d. consumers will be better able to find substitutes

Explanation:

As the period goes by, there is every probability that consumers will get substitutes to products and thus increase price elasticity of demand

I guess answer is true may be