Answer:
d. All of the above are correct.
Explanation:
The supply of a product represents the amount for a product a manufacturer is willing to sell at the market at a particular price at a point in time. Since manufacturers are primarily profit-focused, the supply of a product is influenced by the price of that product as well as the demand for the product.
Hence, a manufacturer can vary the amount of product supplied to the market depending on the short term price and long term price projection as well as the demand for that product.
The correct option is d.