Emma holds a $10,000 portfollo that consists of four stocks. Her investment in each stock, as well as each stock's beta, is listed in the following table: Suppose all stocks in Emma's portfolo were equally weighted. Which of these stocks would contribute the least market risk to the portfolla? Tobotics Inc. Perpetualcold Refrigeration Co. Mairway Toys Co. Three Waters Co. Suppose all stocks in the portfolo were equally weighted. Which of these stocks would have the least amount of stand-alone risk? Tobotics Inc. Mainway Toys Co Three Waters Co. Tobotics Inc. Mainway Toys Co. Three Waters CO. Perpetualcold Refrigeration Co. If the risk-free rate is 7% and the market risk premium is 8.5%, what is Emma's portfolio's beta and required return? Fal in the following tabie