C wave is seen in Iso -volumetric contraction

C wave is seen in -
a) Iso -volumetric contraction
b) Slow filling at end of diastole
c) End of systole
d) Start of diastole
Correct Answer - A
Ans. A. Iso -volumetric contraction
C wave:
Produced by bulging of tricuspid valve into right atrium during Iso-
volumetric contraction of right ventricle