Answer:
c. Maximize the difference between output and input
Explanation:
The objective in determining the price or price change is not just to maximize output neither is it to minimize input only. Instead the objective must take both the input as well as the output into consideration. It means the objective is to increase profit by ensuring that the Marginal Revenue (MR) = Marginal Cost (MC).
Marginal cost represents the cost incurred for selling one extra unit of a product while the Marginal Revenue represents the gain or benefit of selling an extra or additional unit of a product. Profit should be maximized and as such, the objective is to maximize the difference between the output (revenue) and input (cost).