Two technicians are discussing fully charged battery voltage readings. technician a says that it should read approximately 12.6v. technician b says it should read approximately 12.6mv. who is correct?

I prefer to choose the technician A. It should read approximately 12.6V. Volts is the basic unit used to measure voltage and I think the technician B stating the mv units in her reading comes from the units of his multitesters setting.