If a = c and b = c, then.
a < b
a > b
There is no relation between a and b
a = b
If A and B are two events such that P (A) ≠0 and P(B|A) = 1, then.
(A) A ⊂ B
(B) B ⊂ A
(C) B = Φ
(D) A = Φ