The Buyer's Price Sensitivity Increases to the Degree That

The buyer's price sensitivity increases to the degree that:

A) buyers can switch from one supplier to another without incurring additional costs.
B) organizational buyers can easily shop around and assess the relative performance and price of alternatives.
C) the product represents one for which it is difficult to make price comparisons.
D) all of the above.
E) (a) and (b) only.