The Difference in the Color and Consistency of Different Types

The difference in the color and consistency of different types of crayons and pastels is due to

A) the use of different binders.
B) the fact that these medium do not need a binding agent.
C) the fact that crayons are made for children, while pastels are made for artists.
D) the use of liquid pigmentation.
E) None of these answers is correct; there is no difference.