** please helppppp with this question, thank you

Part 1

Which of the following statements is TRUE?

a. The variance increases with the direction of the deviations from the mean.

b. Two common measures of the risk ofa probability distribution are its variance and standard deviation.

c. The variance is the expected absolute deviation from the mean

d. If the return is risk free, then the variance is equal to one.

Part 2

The relationship between risk and return for individual securities becomes evident only when we measure:

a. market return rather than total return

b. risk level rather than return

c.market risk and total risk

d. expected return rather than required return

e.none of the above