Technician A says all air conditioning connections use a gasket or O-ring to seal the system. Technician B says when replacing O-rings you lubricate the O-ring with the correct refrigerant oil to prevent nicks and ease installation. Who is right?

ASE defines area A7 heating and air conditioning as an individual service area. This area includes all components and systems both mechanical and electronic that are related to a vehicle's heating and air conditioning system.