2. Which among the list of formulas should be used to solve for the variance of
discrete random variables of the given data above?
A. OB = [(x + x)2.P(x); for all possible values of x
B. o= {(x – u)2.P(x); for all possible values of x
C. ož = {x.P(x); for all possible values of x
D. = {(P(x) + x)2.x; for all possible values of x​