Problem 1: (33 points) Identify the correct unilateral z-transform of the DT signal te 2 Ik = cosh (ok), 2 > 0 Select one or more: a) X (2) = 1-e10-1 b) X(2) = c) X(2) = d) X () = e) X(2) = 1 e$20 f) None of the above. 1-T z(z - 2 cosh (o)) 2-2 cosh (No)z +1 [-2 -10=1+1=2 20 -1 7 + = e = $0 2 1 -e-02-1] 1- 3 (cosh (0) = |2| < e-20. 12/> eo. e-no