According to the Classic Five-Point Question Format of the Concept

According to the classic five-point question format of the concept test for a product, the top-two-boxes score includes the number of people who:

A) definitely would buy the product or probably would buy the product.
B) probably would buy the product or might or might not buy the product.
C) might or might not buy the product or probably would not buy the product.
D) probably would buy the product or definitely would not buy the product.