Correct option is C
Investors are able to forecast future prices and dividends with certainty: This assumption implies that investors have perfect foresight and can accurately predict the future prices and dividends of a stock. It is not a critical assumption of the MM hypothesis. B. The firm has a given investment policy that does not change: This assumption suggests that the firm's investment decisions are independent of its dividend policy. It is a critical assumption of the MM hypothesis. D. There are no taxes: This assumption assumes the absence of taxes on dividends, capital gains, or any other financial transactions. It is a critical assumption of the MM hypothesis. E. Perfect capital markets in which all investors are rational: This assumption assumes the presence of perfect capital markets without any transaction costs, information asymmetry, or market imperfections. It is a critical assumption of the MM hypothesis.

