The joint distribution of X and Y is: Px,y(0,0)=1/25, Px,y(0,1)=a, Px y(0,2)=2/25 Px,y(1,0)=a, Px,y(1, 1)=b, Pxy(1,2)=a Px y(2,0)=2/25, Pxy(2,1)=a, Pxy(2,2)=1/25 You want "a" to make the variance of Y as minimum as possible. The variance of Y equals. Select one: O a. 1/2 O b. 6/25 O C. 2/5 O d. 3/5 O e. 3/10