This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood Bank & Transfusion Therapy, Subject name: Medicine
True about Rh factor is 
Select and explain. 
A. There are no natural anti-Rh antibodies in serum, B. Seen only in females, C. Approximately 15 % of Indians are Rh positive, D. D is the least powerful Rh antigen
A: There are no natural anti-Rh antibodies in serum
Answer: A: There are no natural anti-Rh antibodies in serum 
Explanation: There are no natural anti-Rh antibodies in serum Approximately 15% of the population lacks this antigen D- is the most immuno-genic Rh antigen