An investor's stand alone risk suggests that (Points : 6) a. this is the risk that the investor would face if she holds this one and only single asset. b. this is the risk that would be derived from her given portfolio of assets. c. it is not necessarily preferred to understand stand-alone risk in order to better appreciate a total portfolio risk according to our textbook. d. If the rate of return on a given investment is equal to the risk-free rate then that given investment should be recommended. e. all of the above are correct ststements