Please help me with these four questions

Cheyenne 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 Investment Beta Standard Deviation $1,750 0.80 15.00% $1,000 1.30 11.00% Omni Consumer Products Co. (OCP) Tobotics Inc. (TI) Water and Power Co. (WPC) Flitcom Corp. (FC) $750 1.10 16.00% $1,500 0.50 19.50% Suppose all stocks in Cheyenne'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 Water and Power Co. O Flitcom Corp. Tobotics Inc. O Water and Power Co. Omni Consumer Products Co. O Flitcom Corp. O Tobotics Inc. O Omni Consumer Products Co. If the risk-free rate is 7% and the market risk premium is 9%, what is Cheyenne's portfolio's beta and required return? Fill in the following table: Beta Required Return Cheyenne's portfolio