Using a sample space S={1,2,3,4} with Pr(i)=1/4 and A={1,2}, find examples of events B, C and D where Pr(A) > Pr(A | B), Pr(A | C) = Pr(A), and Pr(A | D) > Pr(A).

Let E={1,2,3}, F={2,3,4} and G={2,3}. Then a valid example for B, C and D are:

E,F and G

F,E and G

F,G and E

G,E and F

None of these