Stanislaus, 68 years old, presents with a history of heart failure and on auscultation, a third sound is heard, which (Mark the Incorrect):


a- It is present in adolescents normally, but not in older adults.
b- It is a low-frequency sound with a long duration.
c- It appears in the final phase of diastole in the cardiac cycle.
d- It can occur in normal children and in patients with elevated cardiac output.
e- It can be caused by increased velocity in ventricular filling.