Which of the Following Statements Is Most Correct

Which of the following statements is most correct?

A) The probability of an event occurring is one half the percentage of a given outcome.
B) A continuous probability distribution shows all possible outcomes and associated probabilities for a given event.
C) The standard deviation measures the dispersion around the variance.
D) The coefficient of variation is a measure of relative dispersion used in comparing the risk of assets with the same expected returns.