A nurse reviews the following medication onders for accuracy and completeness. Which order is considered complete and appropriate for safe administration?

3/30/08: Fran Jones DOB 2/2/72 Demerol (meperidine) 50 mg IM for pain Dr. James Brown

3/30/08: Fran jones DOB 2/2/72 morphine sulfate 4mg IV stat Dr. James Brown

3/30/08: Fran jones DOB 2/2/72 Keflex (cephalexin) 500 mg every 6 hours for 7 days Dr. James Brown

3/30/08: Fran jones DOB 2/2/72 Digoxin (Lanoxin) 0.5 mg orally every day Dr. James Brown