6. Which of the following ECG patterns is consistent with those seen in the setting of unstable angina or non-ST elevation myocardial infarction?

A. Wellen’s phenomenon (biphasic or deeply inverted T waves in the anterior precordial leads)

B. Isolated T wave flattening or inversion

C. Downsloping ST segment depression

D. Normal ST segments and T waves

E. All of the above