Which blood group can be given to patients of any blood group?

Biological marriage of one of the following should be avoided:

How many statements is/are incorrect?
$(A)$ Blood is a special epithelial tissue
$(B)$ Albumins are needed for clotting
$(C)$ Plasma with the clotting factors is called serum
$(D)$ Plasma is a straw coloured, viscous fluid

What happens when calcium is removed from freshly collected blood?

Where are the non-nucleated blood cells produced?

If the foetus is $Rh^+$ and the mother is $Rh^-$,then: