The component of blood which prevents its coagulation in the blood vessels is

Select the $CORRECT$ match:

Column-$I$	Column-$II$	Column-$III$
$i$. Monocyte	$d$. Kidney shaped nucleus	$n$. Phagocytic
$ii$. Lymphocyte	$a$. Large round nucleus	$o$. Produce antibodies
$iii$. Basophil	$b$. Twisted nucleus	$m$. Release heparin
$iv$. Eosinophil	$c$. Bilobed nucleus	$l$. Antihistamine property

$A$: Yellow bone marrow is reserve erythropoietic tissue.
$R$: After severe bleeding,yellow marrow may convert to red marrow.

Which of the following is correct?

Statement-$I$ : Two surface antigens may be present on the $\text{RBCs}$.
Statement-$II$ : Antigens are chemicals that can induce immune response.

Which of the following formed elements activates the plasma clotting factors?