Read the following statements ( A-C ) about the human heart :
A. The SA node is a specialized mass of cardiac tissue present in the lower-left corner of the right atrium close to the AV septum.
B. The body has the ability to alter the heart rate, cardiac output but not stroke volume.
C. The end of the T- wave in ECG marks the end of the systole.
How Many statements is /are correct from the above?

Options

A. Three
B. Two
C. One
D. None

Answer

B