Which of the following points is the likely position of the center of mass of the system shown in the figure?

                  

1. A
2. B
3. C
4. D

Hint: The center of mass depends on the mass distribution.
 

Explanation: The centre of the mass of a system lies towards the part of the system having a bigger mass. In the above diagram, the lower part is heavier. Therefore, the CM of the system lies below the horizontal diameter.
Hence, option (3) is the correct answer.