Which of the Following Is the Appropriate Dose of Hydromorphone

Which of the following is the appropriate dose of hydromorphone IV for a pediatric patient weighing less than 50 kg?

A) 0.03 mg/kg per dose every 4 hours as needed
B) 1-4 mg per dose every 3-4 hours as needed
C) 0.8-2 mg per dose every 3-4 hours as needed
D) 0.015 mg/kg per dose every 3-4 hours as needed