hich of the following is the autocorrelation function Rz (t1, t2) of a Poisson Random process with an arrival rate A? (assume t, > t Rz(t1, t2) = X²t{ + At1 a. b. Rzz (t1, t2) = X²tyt2 + At2 c. Rz(t1, t2) = X²t3 + At2 d. Rz(t1, t2) = ?t;t2 + At1

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