THERE_IS_A_TRAFFIC_FLOW_OF_250_VEHICLES_ON_ROAD_A_AND_200_VEHICLES_ON_ROAD_B,_IF_THE_GREEN_SIGNAL_TIME_ON_ROAD_A_IS_15_SEC,_THEN_THE_GREEN_SIGNAL_TIME_OF_ROAD_B_IS?$

• A. 10sec
• B. 11sec
• C. 12sec
• D. 13sec