Question

1. technician a says that sae standard j639 spells out details for system design, implementation, and service. technician b says that sae standard j639 specifies refrigerant fitting types and sizes for each refrigerant. who is right? a only b only both a and b neither a nor b

Explanation:

SAE standard J639 indeed covers system design, implementation, and service (as Technician A says). It also specifies refrigerant fitting types and sizes for each refrigerant (as Technician B says).

Answer:

C. Both A and B