K-Block Cooking Charts Are Poster-Sized Recipes Designed to Encourage Children

K-Block cooking charts are poster-sized recipes designed to encourage children to cook. Before marketing the easy-to-use kid's recipes, its inventor asked parents how much they would pay for a package of four recipe cards for their children. K-Block's inventor was trying to determine the _____ for her product.

A) inverse demand
B) demand inference
C) demand reference point
D) expected price
E) augmented value