Which ecg lead picks up myocardial ischemia best on an exercise stress test?

EKG and MI. EKG is a 2 dimensional electronic representation of the heart . Different leads reflect different areas of the heart ,
Anterior wall V2, V3, V4 artery: LAD
Septal wall V1, AVR artery: RCA
Lateral wall I, AVL, V5, V6 artery: Circumflex
Inferior wall II, III, AVF artery: RCA

Anterior wall is left ventricle, but any is a risk .