The nurse is assisting the client with collection of a sputum specimen. The client asks the nurse why it is necessary to rinse the mouth with water before beginning the procedure. How should the nurse respond?
A) Water will help to ensure an adequate sample is obtained.
B) Water will help to rinse the oral cavity of excess saliva and any food particles.
C) Water will help to moisten the oral cavity to aid with expectoration.
D) Water will help to sterilize the oral cavity to avoid specimen contamination.