The nurse is mixing two medications in one syringe. One medication is in a vial, and the other is in an ampule. Which sequence of preparation is correct?
1 The nurse withdraws the medication from the vial first.
2 The nurse prepares the medication from the ampule first.
3 The nurse draws all the medication out of both the ampule and the vial.
4 The nurse inserts air into the ampule first.