To Distinguish a Physiologic Split S₂ Heart Sound,it Is Best

To distinguish a physiologic split S₂ heart sound,it is best to listen with the stethoscope at:

A) Left fifth intercostal space midclavicular line
B) Fourth intercostal space left sternal border with patient holding his or her breath
C) Second intercostal space left sternal border with inspiration
D) Fourth intercostal space right sternal border with expiration