A cardiologist asks for measurement of electromechanical systole(QS2) and left ventricular ejection time(LVET), and pre-ejection period(PEP). The cardiologist is informed by the technical that the carotid transducer is not functioning.Which of th

• A. 2and PEP
• B. LEVT and PEP
• C. QS2
• D. 2and LVET