A Technician Determined That All the Refrigerant Had Leaked Out

Multiple Choice

A technician determined that all the refrigerant had leaked out of the A/C system.Technician A says that the low-pressure switch will need to be replaced before the the system can be recharged.Technician B says that the low pressure switch will need to be adjusted before the system can be recharged.Who is correct?

A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B