Zorn Corporation is deciding whether to pursue a restricted or relaxed working capital investment policy. The firm's annual sales are expected to total $2,520,000, its fixed assets turnover ratio equals 4.0, and its debt and common equity are each 50% of total assets. EBIT is $150,000, the interest rate on the firm's debt is 10%, and the tax rate is 40%. If the company follows a restricted policy, its total assets turnover will be 2.5. Under a relaxed policy its total assets turnover will be 2.1. If the firm adopts a restricted policy, how much lower would its interest expense be than under the relaxed policy? Do not round intermediate calculations.

a. $19,200

b. $11,520

c. $9,600

d. $5,760

e. $4,800