Answer:
B) complements
Explanation:
The cross elasticity shows a relationship between the percentage change in quantity demanded with the percentage change in the price.
In case of the substitute goods, the relation between the price and the quantity demanded is positive that means if the price of goods increased than the quantity demanded is also increased
And, In case of the complementary goods, the relation between the price and the quantity demanded is negative that means if the price of goods increased than the quantity demanded is decreased
According to the given situation, the most appropriate option is B.
