A magnet in the form of a cube is placed on a piece of cork that floats on water. The cube is marked with four directions. W, X, Y and Z and the compass needle which points in the direction as shown in the figure. Which of the following denotes the N - pole and S - pole of the magnet?

• A. N-pole S-pole W X                
• B. N-pole S-pole X Y                
• C. N-pole S-pole Y Z                
• D. N-pole S-pole Z W