Where Would You Place the Electrode If You Were Going

Multiple Choice

Where would you place the electrode if you were going to attach the V₄ lead to it?

A) Right sternal border, fourth intercostal space on the right thorax
B) Fifth intercostal space, midclavicular line on the left thorax
C) Left leg, just proximal to the medial malleolus
D) Lateral to V₅, on the left midaxillary line of the left thorax