Which of the following statements is correct? a. the preemptive right gives stockholders the right to approve or disapprove of a merger between their company and some other company. b. the preemptive right is a provision in the corporate charter that gives common stockholders the right to purchase (on a pro rata basis) new issues of the firm's common stock. c. the free cash flow valuation model, vops =fcf1/(wacc − g), cannot be used for firms that have negative growth rates. d. the free cash flow valuation model, vops = fcf1/(wacc − g), can be used only for firms whose growth rates exceed their wacc. e. if a company has two classes of common stock, class a and class b, the stocks may pay different dividends, but under all state charters the two classes must have the same voting rights.