A nurse is transcribing the following provider prescriptions into a client's chart. Which of the following prescriptions should the nurse clarify?

Rationale A. Insulin Glargine 20 units SUBQ qd: The abbreviation "qd" can be misinterpreted and is considered unsafe in medication orders. Insulin requires precise dosing and timing to prevent hypo- or hyperglycemia. The nurse should clarify the prescription with the provider and document "once daily" to ensure safe administration. B. Ceftriaxone 250 mg IM stat: This prescription is clear regarding the medication, dose, route, and timing. "Stat" indicates immediate administration, which is understandable and requires no clarification. C. Diazepam 5 mg PO Q8h PRN muscle spasms: The prescription clearly specifies the dose, route, frequency, and indication. The nurse can safely administer as needed without needing clarification. D. Digoxin 0.5 mg IV once: The prescription provides complete information about the medication, dose, route, and single administration. No ambiguous abbreviations are present, so clarification is unnecessary.