Which of the following statements is FALSE? The volatility of the portfolio will differ, depending on the correlation between the securities in the portfolio

Which of the following statements is FALSE? The volatility of the portfolio will differ, depending on the correlation between the securities in the portfolio. The variance is a measure of how "spread out" the distribution of the return is. The covariance and correlation allow us to measure the co-movement of returns. If the return is riskless and never deviates from its mean, its variance is equal to zero. We say a portfolio is an efficient portfolio whenever it is possible to find another portfolio that is better in terms of both expected return and volatility.