A Nurse Is Teaching a Client Deep Breathing Exercises

A nurse is teaching a client deep breathing exercises. The client asks, "Why do I need to make that funny shape with my lips when I breathe out?" What is the most appropriate nursing reply?

A) "You can actually exhale anyway you like; the lip shape is not important."
B) "Pursed lip breathing helps you control the exhalation and helps to keep your airways open."
C) "Don't worry about the lip shape; concentrate instead on the pace of your breathing."
D) "The shape of the lip decreases the cough and choking reflex."