Two goods are complements when a decrease in the price of one good a. decreases the quantity demanded of the other good. b. decreases the demand for the other good. c. increases the quantity demanded of the other good. d. increases the demand for the other good.

Option A

Explanation: In simple words, complement goods refers to those goods which are used together for example - diesel and diesel car. If the price of diesel increases then the demand for diesel cars will decrease as the consumers will shift to petrol cars or other such means.

These goods depicts negative relationship between price of one and demand for another.

Hence from the above we can conclude that the correct option is A .

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