A light rod of length `l` has two masses `m_1` and `m_2` attached to its two ends. The moment of inertia of the system about an axis perpendicular to the rod and passing through the centre of mass is.
A. `(m_(1)m_(2))/(m_(1)+m_(2)) l^(2)`
B. `(m_(1)+m_(2))/(m_(1)m_(2)) l^(2)`
C. `(m_(1)+m_(2))l^(2)`
D. `sqrt(m_(1)m_(2))l^(2)`
