When You Tell a Patient That You Need to Draw

When you tell a patient that you need to draw blood, he says that he does not want to have his blood drawn. What is the appropriate action?

A) Explain the procedure and ask the patient if he will consent.
B) Tell the patient the doctor ordered it, so he must have it collected.
C) Call for help to restrain the patient so you can get the specimen.
D) Keep trying to convince the patient to have his blood drawn.