The appropriate present value model to use to evaluate permanent working capital decisions is the: O A. Annuity model since each year's change is assumed to be the same. B. Perpetuity model since the change is assumed to have an indefinite life. C. Growing cash stream model since the firm will change in size each year. O D. Both A and C The appropriate number to use as the cost of capital to evaluate a capital budgeting project: O A. Is independent of financial market conditions. O B. Depends on the risk of the project. OC. Does not change from project to project. O D. Is typically greater than the firm's existing cost of capital