please quickly thanks!

Question 16 Suppose that X1, X2, X3, . . . are independent standard normal random variables' The process {Xnyn 2 1} is Markov. Select one: 0 True 0 False Question 17 If a Markov process has pi = 0, where Pii denotes the (one-step) transition probability from state i to itself, then state i cannot be aperiodic. Select one: O True O False