Final answer:
If you carry the Rh antigen, you are referred to as Rh Positive.
Step-by-step explanation:
The answer to your question is a) Positive. If you carry the Rh antigen, you are referred to as Rh Positive. The Rh antigen is found on Rh-positive red blood cells.
When identifying a patient's blood type, the Rh group is designated by adding the words positive or negative to the ABO type.
For example, A positive (A+) means ABO group A blood with the Rh antigen present.