A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a leveled road. If the value of g be 10 m/s2, the work done by the girl against the gravitational force will be:
A. 6000 J B. 0.6 J
C. 0 J D. 6 J
Since, the force applied and the displacement is in perpendicular direction.