A nurse is preparing an in-service program about preventing medication errors when transcribing a prescription. The nurse is using a dosage example of two tenths of a milligram. Which of the following examples should the nurse use to show appropriate transcription of this dosage?

Choice A reason: Transcribing the dosage as 20 mg is incorrect and represents a significant overdose. It does not reflect the correct amount of two tenths of a milligram and could lead to serious medication errors. Choice B reason: Writing the dosage as 0.20 mg is incorrect because it includes an unnecessary trailing zero after the decimal point. Trailing zeros can lead to misinterpretation and medication errors. Choice C reason: Transcribing the dosage as 2 mg is incorrect and represents a substantial overdose. It does not correspond to the intended amount of two tenths of a milligram. Choice D reason: Writing the dosage as 0.2 mg is the correct way to transcribe two tenths of a milligram. It uses a leading zero before the decimal point, which helps prevent dosage errors by clearly indicating the decimal place.