A financial planner is examining the portfollios held by several of her clients. Which of the folowing portfolios is tikely to have the imailest standard deviation? A portfolio containing Microsoft, Apple, and Google stock, A portfollo containing only Microsont stock. A portfolio consisting of about three randomly selected stocks from different sectors. Portfolio managers pick stocks for their clients' portfolios based on the investment objective of the portfolio and severat other factors. One key consideration is each stock's contribution to portfolio risk and its statistical relationship with the portfollo's other stocks