Answer:
A. cross price elasticity of demand will be negative
Explanation:
Complement goods are goods demanded together. If the demand for one good increases, the demand for the other good increases. If the price of one good rises, the demand for the other good falls.
Cross price elasticity of demand measures the responsiveness of quantity demanded of one good to changes in price of another good.
The cross price elasticity for complements is negative because a rise in price for one good leads to fall in the quantity demanded of the other good.
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