A Patient Has Just Been Prescribed Insulin

A patient has just been prescribed insulin.
What should the nurse tell this patient to do to take the insulin correctly?

A) Use the injection site that is the most accessible.
B) During times of illness, increase insulin dosage by 25%.
C) When mixing insulins, draw the cloudy insulin (such as neutral protamine Hagedorn [NPH] insulin) up into the syringe first.
D) When mixing insulins, draw the clear insulin (such as regular insulin) up into the syringe first.