Concept:Unrelated goods are independent goods, so the price change of one does not affect demand for the other.
Explanation:When two commodities are unrelated, they are called independent goods.
Examples include a refrigerator and a bicycle.
A change in the price of a refrigerator will not change the quantity demanded of bicycles.
This is because consumers do not use these goods together or as substitutes.
Demand for one product is determined by its own price and other factors, not by the price of an unrelated product.
Therefore, the quantity demanded of the other commodity remains unchanged.
Answer:B. have no effect on the quantity demanded of the other