Part b only

14,216, 1 BARIMA(U, 1, 1) X (0, 0, 3) 12, (11) SARIMA (2, 1, 2) X (2, 0, 1)1. (b) For the following processes {X}, identify SARIMA (p, d, q) x (P, D, Q), model: (i) (1 - B12)2X, =(1-0.3B)Zz; (ii) X. = 0.5X-6 + Zu; (iii) (1 -0.8B)(1 + 0.5B4)X, = (1 -1.5B)Z. (c) You are given a time series model where PACF is zero except for lags 12 and 24. Which model will have this pattern