9. Which of the following statements is true regarding enhanced external counterpulsation (EECP)?

A. Exercise tolerance is improved with EECP

B. EECP  is considered first line therapy for stable angina

C. Patients undergoing EECP use less short acting nitrates

D. EECP reduces mortality in stable angina patients

E. EECP reduces the time to 1 mm ST depression on treadmill ECG testing