Respuesta :
The answer is A. If the cones need to be sold & the ice cream gets put on sale 9/10 they will buy the cones.
Answer: a. complements
Complementary goods are those that consumers believe to go well together. As these items are often bought together, when the price of one goes down, the demand for the other one usually increases, depending on how intertwined they are. In this case, ice cream and ice cream cones are usually sold together, so they are considered complements.