Technician a Says When Testing, the Ground Side, Voltage Drop

Multiple Choice

Technician A says when testing, the ground side, voltage drop should be less than 0.2 volt. Technician B says the total insulated system drops should be less than 0.7 volt. Who is correct?

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