why is it important to know a persons rhesus factor before a blood transfusion?\no a patient who is rh+ can…

why is it important to know a persons rhesus factor before a blood transfusion?\no a patient who is rh+ can receive only rh - blood.\no a patient who is rh - can receive only rh+ blood.\no a patient who is rh+ can receive only rh+ blood.\no a patient who is rh - can receive only rh - blood.
Answer
Brief Explanations:
The rhesus (Rh) factor is an important blood - type antigen. If a person with Rh - blood receives Rh+ blood, their immune system will recognize the Rh antigen as foreign and produce antibodies against it, leading to a transfusion reaction. A person with Rh+ blood can receive both Rh+ and Rh - blood, but a person with Rh - blood can only receive Rh - blood to avoid immune reactions.
Answer:
A patient who is Rh - can receive only Rh - blood.