Which of the Following Statements Is FALSE

Which of the following statements is FALSE?

A) While the sign of the correlation is easy to interpret,its magnitude is not.
B) Independent risks are uncorrelated.
C) When the covariance equals 0,the returns are uncorrelated.
D) To find the risk of a portfolio,we need to know more than the risk and return of the component stocks;we need to know the degree to which the stocks' returns move together.