Which of the following is true of the antarctic treaty system?

Antarctic Treaty, Antarctica is the only continent without a native population is an agreement regulating the international situation. Signed in 1959, began to be implemented in 1961. Has been approved so far been signed by 50 countries.
Treaty of Antarctica can be used freely for scientific study and indicates the military can not be used for any purpose.

Ithink option a is correct because you cannot donate a different blood group than yours because it won't match.option a says betsy can donate to mark. they have the same blood group so donation can happen.