What is the maximum period within which stored blood should be transfused?

Lymphocytes ($20-25$ $\%$) are of two major types,$B$ and $T$ forms. They are responsible for

Properties of human $RBCs$ are:
$I.$ Devoid of nucleus
$II.$ Formed in bone marrow
$III.$ Possess healing properties
$IV.$ Biconcave in shape
$V.$ Help in blood clotting
Choose the option with correct properties.

$Rh$ factor may be responsible for

$A$ person with an unknown blood group ($ABO$ system) has lost a large amount of blood in an accident and needs an immediate blood transfusion. $A$ friend of the person has a valid certificate of their own blood group and is ready to donate blood without delay. What could be the blood group of the donor friend?

Match the Column $I$ (blood corpuscles) and Column $II$ (stem cells/precursors from which they are formed).

Column $I$ (Blood corpuscles)	Column $II$ (Stem cells/precursors)
$i$. Thrombocytes	$a$. Lymphoid stem cells
$ii$. Granulocytes	$b$. Megakaryocytes
$iii$. Erythrocytes	$c$. Myeloid stem cells
$iv$. Agranulocytes	$d$. Reticulocytes

Choose the correct option given below.