After teaching a client who has an Implantable cardioverter-defibrillator (ICD), a nurse assesses the client's understanding. Which statement by the client indicates a correct understanding of the teaching?

"I would wear a snug-fitting shirt over the ICD".

"I will avoid sources of strong electromagnetic fields".

"Now I can discontinue my antidysrhythmic medication.

"I would participate in a strenuous exercise program".