The nurse instructs a client on the use of transdermal nitroglycerin 0.2 mg/hour patch for angina pectoris. Which client statement indicates that teaching was effective?
A. "I should apply the patch to the same area every day."
B. "I should touch the medication pad before applying to my skin."
C. "I should report any skin irritation to the healthcare provider."
D. "I should store the supply of transdermal pads in the refrigerator."