Directions: The question below consist of a group of sentences followed by a suggested sequential arrangement. Select the best sequence.
(A) Then think of by how much our advertising could increase the sale level.
(B) Advertising effectiveness can be best grasped intuitively on a per capita basis.
(C) Overall effectiveness is easily calculated by considering the number of buyers and the cost of advertising.
(D) Think of how much of our brand the average individual is buying now.