A nurse is reinforcing teaching with the parents of a child who is starting to use a spacer with a metered-dose inhaler (MDI) to treat asthma. Which of the following information should the nurse include in the teaching?

Cover exhalation slots of the spacer with lips when inhaling.

The spacer increases the amount of medication delivered to the oropharynx.

The spacer decreases the amount of medication delivered to the lungs.

Inhale slowly when using the spacer with the MDI.