以下哪组的关键词设置的比较好( )A Scooter Gas Scooter Gas Scooter AccessoryB Gas Scoote

以下哪组的关键词设置的比较好()

A、Scooter, Gas Scooter, Gas Scooter Accessory

B、Gas Scooter, Gasoline Scooter, G-Scooter, G Scooter, Scooter, 50cc Scooter, EEC Approved Scooter