Since They Are Often Used Together,peanut Butter and Jelly Are

Multiple Choice

Since they are often used together,peanut butter and jelly are:

A) substitutes and have a positive cross-price elasticity.
B) complements and have a positive cross-price elasticity.
C) substitutes and have a negative cross-price elasticity.
D) complements and have a negative cross-price elasticity.
E) inferior goods when the demand or goods is positive.