According to our text, which of the following statements is true? O Maximizing shareholder wealth should be the goal of the firm. All of the above are true. O Maximizing shareholder wealth is selfish and is not good for the economy. O Profit maximization should be the goal of the form. Profit maximization is equivalent to maximization of firm value. When investors buy longer-term securities, they require a higher rate of return because there is a greater risk of price fluctuations. This additional return is referred to as a: O yield differential O liquidity risk premium nominal risk premium default-risk premium maturity risk premium