Question

Various types of grouping of blood has been done. But widely used two such groupings all over the world are
(A) ABO and Rh system
(B) MNS and Rh system
(C) Rh and Lewis system
(D) ABO and Lutheran system​

Answer 1

Answer:

a option is the right answer mate

it is used widely all over the world

Answer 2

Answer:

A option is the right answer

it is used widely all over the world..