Which ECG leads monitor the inferior surface of the heart during an inferior MI?

Monitoring the inferior surface of the heart during an inferior myocardial infarction (MI) is primarily done using the leads that provide the most direct view of this area. The leads that effectively monitor this surface include lead II, lead III, and lead aVF.

Lead II provides a good baseline for monitoring the inferior wall due to its positioning, which reflects electrical activity from the right atrium, and it also views the inferior wall of the left ventricle. Lead III is situated to capture activity from the inferior wall, as it looks directly at the area supplied by the right coronary artery in most individuals. Lead aVF also exclusively monitors the inferior aspect of the heart, as it views electrical activity from the foot pointing upwards toward the heart's inferior wall.

In summary, B is validated as the correct choice because it incorporates leads that effectively capture electrical activity from the inferior regions of the heart, crucial for diagnosing and managing inferior myocardial infarctions.