Cardiac output is determined by which of the following?

Match the following columns:

Column $- I$	Column $- II$
$a$. Bicuspid valve	$p$. Brain
$b$. Nephron	$q$. Liver
$c$. Alveoli	$r$. Heart
$d$. Cerebrum	$s$. Kidney
	$t$. Lungs

What is the correct order of events occurring in blood clotting?
$I.$ Conversion of fibrinogen to fibrin
$II.$ Formation of clot
$III.$ Thromboplastin formation
$IV.$ Conversion of prothrombin to thrombin
Choose the correct option.

Statement-$I$: The first heart sound $(lub)$ is associated with the opening of the tricuspid and bicuspid valves.
Statement-$II$: Cardiac output of an athlete is much higher than that of an ordinary man.

Consider the following four statements regarding the human circulatory system:
$(a)$ Arteries have thick walls and have a smaller lumen compared to veins.
$(b)$ Angina is a sudden chest pain.
$(c)$ In the $ABO$ blood grouping system,a person with $AB$ blood group can donate blood to anyone.
$(d)$ Calcium ions play an important role in blood clotting.
Which two of the above statements are correct?

Select the correct option for myogenic and neurogenic hearts.