14. Create the following matrix A:

Use the matrix A to:

a) Create a five-element row vector named va that contains the elements of the first row of A.

b) Create a three-element row vector named vb that contains the elements of the third column of A.

c) Create a eight-element row vector named vc that contains the elements of the second rows of A and the fourth column of A.

d) Create a six-element row vector named vd that contains the elements of the first and fifth columns of A.