Which Statement by the Patient Indicates a Need for Additional

Which statement by the patient indicates a need for additional instruction in administering insulin?

A) "I need to rotate injection sites among my arms, legs, and abdomen each day."
B) "I can buy the 0.5 mL syringes because the line markings will be easier to see."
C) "I should draw up the regular insulin first after injecting air into the NPH bottle."
D) "I do not need to aspirate the plunger to check for blood before injecting insulin."