Which of the following statements are true regarding a capnogram? ? I. It is a direct measurement of PCO2 eliminated by the lungs. II. It is an indirect measurement of PCO2 eliminated by the lungs. III. It is an indirect measurement of PvCO2. IV. It is a direct measurement of PaCO2.
A) II and IV only B) II and III only C) I and III only D) I and IV only