B. Given A = {1, 2, 3, 4) , B = { x, y, z], C= [ a, b, c, d). Let R be the following relation from A to B and S is the relation from C to A. R = {(1, y), (1, z), (3, y), (4, x), (4, z), (2, x), (2, y) } S = {(a, 2), (a, 3), (b, 4), (c, 2), (c, 3), (d, 1), (d, 2) } 1. Illustrate the matrix relation of R. 2. Draw the arrow diagram of S. 3. Find the inverse relation of R