A Manager of a Firm with Market Power Faces the Marginal

Multiple Choice

A manager of a firm with market power faces the marginal revenue product and average revenue product curves shown below.The firm incurs weekly fixed costs of $1,800.The firm employs a single variable input,labor,which costs $600 per worker each week. Given the above,in profit-maximizing or loss-minimizing) equilibrium,the firm's total variable costs are

A) $12,000.
B) $6,000.
C) $600.
D) $400.
E) none of the above