1998 AHSME Problem 1

Each of the sides of five congruent rectangles is labeled with an integer. In rectangle A, w = 4, x = 1, y = 6, z = 9. In rectangle B, w = 1, x = 0, y = 3, z = 6. In rectangle C, w = 3, x = 8, y = 5, z = 2. In rectangle D, w = 7, x = 5, y = 4, z = 8. In rectangle E, w = 9, x = 2, y = 7, z = 0. These five rectangles are placed, without rotating or reflecting, in position as below. Which of the rectangle is the top leftmost one?