Which of the following statements is INCORRECT?

The coefficient of variation is a better measure of risk than the standard deviation if the expected returns of the securities being compared differ significantly.

The higher the correlation between the stocks in a portfolio, the higher the risk inherent in the portfolio.

If you add enough randomly selected stocks to a portfolio, you can completely. eliminate all of the market risk from the portfolio.

For a portfolio consisting of two securities$,$ when returns from the two securities are perfectly negatively correlated $($that is$,$ correlation coefficient is equal to negative one$),$ thert will always be some proportion of the securities that will result in the complete elimination of portfolio risk.