Capital Corporation, which has a target capital structure of 40 percent debt and 60 percent common equity, is evaluating an expansion project with an 8.5 percent IRR. The project costs $6 million, and any portion of it can be purchased. The firm expects to retain $4.8 million of earnings this year. It can raise up to $2 million in new debt with rd=6%; all debt above $2 million will have rd=8%;rs=11%; and re=14% for any amount of new common stock that is issued. If the firm''s marginal tax rate is 35%, what is its optimal capital budget?