The client who has emphysema and recently experienced a stroke receives a prescription for a metered-dose inhaler with a spacer device. The client asks the nurse if using the spacer is necessary. Which information should the nurse provide?

Choice A reason: Using a spacer allows time for the client to inhale the entire dispensed dose, ensuring that the medication is delivered effectively to the lungs.Choice B reason: While a spacer may reduce the risk of oral thrush, it is not specifically intended to prevent mouth infections.Choice C reason: A spacer does not slow the entry of medication into the lungs; it helps to deliver the medication more effectively.Choice D reason: While using a spacer can increase the effectiveness of the medication, the primary reason is that it allows the client to inhale the entire dose properly.