Which of the following is not a factor affecting elasticity?

A. availability of substitutes

B. the goods relative importance

C. whether the food is a necessity or a luxury

D. the goods price range

I believe the answer is: D. the goods price range

- option A is wrong because As a product has less availibility, consumers would have no choice beside that product, which make it become less elastic.

- Option B is wrong because goods of relative importance tend to be irreplacable regardless of its change in price, which make these goods inelastic

- Option C is wrong because necessity goods tend to make the goods become more inelastic since our life would be in danger if we don't consume them.