When Services Often Cannot Be Separated from Their Creator-Seller

When services often cannot be separated from their creator-seller,:

A) hard-selling middlemen are necessary.
B) a direct sale from a producer to a consumer is often the only possible channel of distribution available.
C) most services do not go through a life cycle as a tangible product does.
D) quantity discounts cannot be offered in the pricing of these services.
E) television is a poor advertising medium.