Two Children Balance on a Seesaw,which Consists of a 70-Kg

Two children balance on a seesaw,which consists of a 70-kg thin 5-m long steel rod that pivots about its center on a fulcrum.The first child has a mass of 22 kg and sits 2.5 m from the fulcrum while the second child with mass 31 kg sits on the opposite side,1.8 m from the fulcrum.The moment of inertia of the seesaw/children system about the fulcrum is

A) 238 kg m².
B) 1990 kg m².
C) 183 kg m².
D) 384 kg m².
E) 265 kg m².