The Physician Writes an Order for the Following: 10 Units

The physician writes an order for the following: 10 units regular insulin with 40 units NPH at 0700.When administering the insulins,the nurse is careful to

A) draw the regular or unmodified insulin into the syringe first.
B) inform the client that mixing insulins will help increase insulin production.
C) rotate sites at least once weekly and label the sites used on a diagram.
D) use a 23- to 25-gauge syringe with a 1-inch needle for maximal absorption.