The Alpha Beta Company is attempting to establish a current assets policy. Fixed assets are $700,000, and the firm plans to maintain a 40% debt-to-assets ratio. Alpha Beta has no operating current liabilities. The interest rate is 12% on all debt. Three alternative current asset policies are under consideration: 30%, 40%, and 70% of projected sales. The company expects to earn 18% before interest and taxes on sales of $5 million. Alpha Betas effective federal-plus-state tax rate is 30%. What is the expected return on equity under each asset policy?