Which of the Following Is NOT Equal to Cov(X,Y)?
A) $\mu$

Which of the following is NOT equal to cov(X,Y) ?

A) $\mu$ _xy
B) E[(x- $\mu$ _x) (y- $\mu$ _y) ]
C) E(xy) - $\mu$ _x $\mu$ _y
D) $\rho$ _xy