Use the Following to Answer Question

Multiple Choice

Use the following to answer question:
Figure: Profit Maximization for a Firm in Monopolistic Competition
-(Figure: Profit Maximization for a Firm in Monopolistic Competition) Use Figure: Profit Maximization for a Firm in Monopolistic Competition.Suppose that an innovation reduces a firm's costs from ATC to ATC'.After the innovation reduces the cost,the firm's economic profit at the new profit-maximizing quantity is:

A) $0.
B) $30.
C) $1,500.
D) $3,000.