Statement-$I$ :- The body has the ability to alter the stroke volume as well as heart rate and thereby the cardiac output.
Statement-$II$ :- During each cardiac cycle two prominent sounds are produced which can not be easily heard through a stethoscope.

  • A
    Statement-$I$ is correct but statement-$II$ is incorrect.
  • B
    Statement-$II$ is correct but statement-$I$ is incorrect.
  • C
    Both statement-$I$ and statement-$II$ are correct.
  • D
    Both statement-$I$ and statement-$II$ are incorrect.

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