Assume an investor with the following utility function: U= E(r) - 0.60(s²). To maximize her expected utility, which one of the following investment alternatives would she choose? A) A portfolio that pays 10% with a 60% probability or 5% with 40% probability. B) A portfolio that pays 10% with 40% probability or 5% with a 60% probability. C) A portfolio that pays 12% with 60% probability or 5% with 40% probability. D) A portfolio that pays 12% with 40% probability or 5% with 60% probability.