Which of the following statements istrue?

Question 8 options:

A)

In general, if a product has few substitutes it will have an elastic demand.

B)

The more time that passes the more inelastic the demand for a product becomes.

C)

The demand curve for a necessity is more elastic than the demand curve for a luxury.

D)

The more narrowly we define a market, the more elastic the demand for a product will be.