Answer:
d.a surplus of apples must have existed.
Explanation:
If the supply of apples increased while there is no change in the demand for Apples, there would be a surplus and price would fall.
If the supply of apples decreased while there is no change in the demand for Apples, there would be a shortage of apples and price would rise.
If the demand for apples recently increased while supply remains unchanged, there would be a shortage and the price of apples would rise.
I hope my answer helps you
