Answer:
There are five primary functions of carbohydrates in the human body. They are:
energy production
energy storage
building macromolecules
sparing protein
and assisting in lipid metabolism.
I think blood types are mainly given just for the purpose of scientific research as well as the purpose of blood donation.
I don't think one blood type is necessarily better than another/has better qualities though.
(This is just my basic knowledge. ☻)
