Which of the Following Are Characteristics of Breath Sounds That

Multiple Choice

Which of the following are characteristics of breath sounds that should be evaluated whenever chest auscultation is performed?
1) The respiratory rate
2) The pitch (vibration frequency)
3) The amplitude or intensity (loudness)
4) The duration of inspiration versus expiration

A) 1 and 4
B) 2 and 3
C) 1, 2, and 3
D) 2, 3, and 4