The practical nurse (PN) notices that one of the unlicensed assistive personnel (UAP) working in the long term care facility consistently records subnormal temperatures when using a tympanic thermometer. Which action should the PN take first?

A. Observing the method of temperature measurement by the UAP helps identify any incorrect technique or error in obtaining readings. B. Returning the thermometer for recalibration assumes the issue is with the equipment, which might not be the case. C. Showing the UAP how to chart temperatures assumes the problem is with documentation, not measurement. D. Demonstrating how to use the equipment might not address the specific error observed in temperature readings.