Answer:
Researchers haven’t yet discovered an effective vaccine for HIV. Advances in technology and medical capabilities have brought more advanced HIV treatments.
Explanation:
ABO blood typing of whole blood unit that will be transfused is following the Report code 86900. The samples are required to be in a container with a maintaining temparature of 1c - 10 c. ABO is just simply a blood group. It also invloves testing and identifying red blood cells.
I believe the answer is B. I hope this helps