In a physical balance working on the principle of moments, when 5 mg weight is placed on the left pan, the beam becomes horizontal. Both the empty pans of the balance are of equal mass. Which of the following statements is correct?

A

Every object that is weighed using this balance appears lighter than its actual weight

B

Left arm is shorter than the right arm

C

Both the arms are of same length

D

Left arm is longer than the right arm