Attempts Keep the Highest: /4 5. Portfolio risk and returnn Aa Aa Ariel holds a $5,000 portfolio that consists of four stocks. Her investment in each stock, as well as each stock's beta, is listed in the following table Stock Perpetualcold Refrigeration Co. (PRC) Zaxatti Enterprises (ZE) Western Gas & Electric Co. (WGC) Mainway Toys Co. (MTC) Investment $1,750 $1,000 $750 $1,500 Beta 0.90 1.70 1.10 0.50 Standard Deviation 15.00% 11.00% 18.00% 25.50% Suppose all stocks in Ariel's portfolio were equally weighted. Which of these stocks would contribute the least market risk to the portfolio? Suppose all stocks in the portfolio were equally weighted Which of these stocks would have the least amount of standalone risk? O Mainway Toys Co O Perpetualcold Refrigeration Co O Zaxatti Enterprises O Perpetualcold Refrigeration Co Western Gas & Electric Co O Zaxatti Enterprises O Mainway Toys Co Western Gas & Electric Co If the risk-free rate is 4% and the market risk premium is 6%, what is Ariel's portfolio's beta and required return? Fill in the following table Beta Required Return Ariel's portfolio