a management science 301student is comparing the returns of two investment alternatives, alternative A and Alternative B, in order to select one of them for investment. Return in dollars for the two alternatives in the last 5 months is given by For A returns are 180,195,150,150,165 For B returns are 240,180,300,405,-20 1. what is the coefficient of variation of returns for A? 2) what is the coefficient of variation of returns of B