Which of the following statements about portfolio diversifications are correct? Check all that apply. By adding enough partially correlated stocks, risk can be completely eliminated. The higher the stocks' correlation coefficients, the lower the portfolio's risk. Stocks with perfectly negatively correlated returns do not exist. The risk of a portfolio declines as the number of stocks in the portfolio increases. Which of the following statements about portfolio diversifications are correct? Check all that apply. By adding enough partially correlated stocks, risk can be completely eliminated. The higher the stocks' correlation coefficients, the lower the portfolio's risk. Stocks with perfectly negatively correlated returns do not exist. The risk of a portfolio declines as the number of stocks in the portfolio increases