Answer:
The correct answer is option a.
Explanation:
Apples and oranges are substitutes. An increase in the price of oranges will cause the demand for apples to increase. This is because people will prefer a cheaper substitute. This increase in the demand for apples will cause its demand curve to shift to the right.
The rightward shift in the demand curve will cause the equilibrium price to increase. But this change in price will not cause a change in demand. The change in price affects only the quantity demanded. Change in demand happens because of a change in other factors.
So, the given statement is not correct.