Where Is Precordial Lead V4 Positioned

Multiple Choice

Where is precordial Lead V4 positioned?

A) In the 5^th intercostal space along a point of reference called the mid-clavicular line
B) On the chest opposite of the V1 electrode
C) On the right side of the sternum in the 4^th intercostal space of the ribs
D) In the 5^th intercostal space at a point of reference called the left anterior axillary line