A Ski Lift Carries Passengers Up a 150 M High

A ski lift carries passengers up a 150 m high slope at the rate of one chair every 30.0 seconds. If the chair will hold two passengers with a combined total mass of 190 kg, then the power output of the engine that powers the ski lift is

A) 6.96 kW.
B) 7.83 kW.
C) 8.75 kW.
D) 9.31 kW.
E) 9.90 kW.