A Physician Orders Rocephin 250 Mg Intramuscularly

A physician orders Rocephin 250 mg intramuscularly. The medicine is available in a 1 g/mL vial. Which of the following is the correct amount to administer to the patient?

A) 0.25 mL
B) 0.5 mL
C) 0.8 mL
D) 1.25 mL
E) 1.50 mL