A nurse is assisting in 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 transcription examples should the nurse use?

A. 0.2 mg: The correct way to write decimal doses is with a leading zero (0.2) to prevent misinterpretation. B. 0.20 mg: Trailing zeros (0.20) should be avoided because they increase the risk of dosing errors (e.g., misread as "20 mg"). C. 12 mg: Not equivalent to 0.2 mg; incorrect dose. D. 2.0 mg: Not equivalent to 0.2 mg, and trailing zeros should be avoided.