A client has a prescription for heparin 5000 units IV STAT. Several pre-filled syringes of low molecular weight heparin are available in the client's medication drawer. Which action should the nurse implement?

D Advise the pharmacy of the need to deliver a vial of heparin to the nursing unit immediately. A Request a prescription to change the route of administration and use the available heparin. C Dilute the available heparin in 250 ml of normal saline solution prior to IV administration. B Calculate and administer the equivalent dose of the available low molecular weight heparin.