<prompt> All of the following hea sounds occur sholy after S2 exceptOpening snapPericardial knockEjection clickTumor plop  <response>: An ejection sound is a high-pitched early systolic sound that corresponds in timing to the upstroke of the carotid pulse. The other three are heard during diastole. ref - harrsons internal medicine 20e pg1671-1673,1811,1815 