Discrete time signal is given as X[n]=2u[n] (0.1)n Which of the followings is z transform of the signal? a. X(z) = 0.17/(Z+0.1) b. X(z) = 2z/(z+0.1) c. X(z)= 0.17/(2-2) d. X(z) = z/Z-0.1) e. X(z) = 27/(2-0.1)