Refrigerant identifiers are being discussed.  Technician A says a refrigerant identifier will display R-12 if the refrigerant is 90% CFC-12 by weight. Technician B says a refrigerant identifier will display R-134a if the refrigerant is 98% HFC-134a by weight. Who is correct?

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


Answer: B

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