A nurse is providing teaching to a client who has a new prescription for a hearing aid. Which of the following client statements indicates an understanding of the teaching?

"I should wipe off the hearing aid each day with an alcohol wipe."

"I will change the battery in the hearing aid when it makes a whistling sound."

"I will make sure the hearing aid is off before inserting it in my ear."

"I should start wearing the hearing aid for at least 1 hour at a time."