A nurse is teaching a client about using an intrauterine device (IUD) for contraception.Which of the following client statements indicates an understanding of the teaching?

Choice A rationaleIUD replacement depends on the type. For instance, hormonal IUDs typically last 3-5 years, and copper IUDs can last up to 10 years. Annual replacement is unnecessary.Choice B rationaleSpermicide use is unnecessary with an IUD as its primary function is to prevent fertilization. This statement reflects a lack of understanding of IUD mechanisms.Choice C rationalePeriods may become lighter or irregular with hormonal IUDs, but they rarely stop completely. Copper IUDs may actually increase menstrual flow in some cases.Choice D rationaleChecking for the string ensures proper IUD positioning and functionality. This monthly practice helps detect dislodgement or expulsion, which can compromise contraceptive effectiveness.