What is the percentage of hemoglobin in $RBCs$ (in $\%$)?

One of the factors required for the maturation of erythrocytes is

$A$ person having blood group $O$ can receive blood of:

During the process of blood coagulation,vitamin $K$ helps in

Match the different types of leucocytes (Column-$I$) with their percentage of occurrence (Column-$II$) in a healthy adult and choose the correct answer.

Column-$I$	Column-$II$
$A$. Neutrophils	$(i)$ $6-8\%$
$B$. Lymphocytes	$(ii)$ $60-65\%$
$C$. Monocytes	$(iii)$ $0.5-1\%$
$D$. Basophils	$(iv)$ $2-3\%$
$E$. Eosinophils	$(v)$ $20-25\%$

Match the columns:

Column-$I$ (Blood group)	Column-$II$ (Antigen present)
$A$. $A$	$p$. $B$
$B$. $B$	$q$. $A$
$C$. $AB$	$r$. $A$ and $B$
$D$. $O$	$s$. $A, B$ and $O$
	$t$. $NIL$