8. After executing the following script file in MATLAB x-3*); y-x/2*sqrt(-1); z-x+y, the displayed result is a. 1.5000-3.0000 i b. An error message c. 3.00001.5000 i d. 1.50003.0000 i e. None of the above 9 Executing the following code x [2:4;-1:1; 12 3] y x(2,:);size(y'), yields a. 22 b. 3 1 C. 2 1 d. 13 e. None of the above