Which of the Following is Least Likely to Cause a Problem

Question

Which of the following is least likely to cause a problem?
A) A woman with type AB blood who is transfused with type O blood
B) A man with type O blood who is transfused with type AB blood
C) A woman with Rh-negative blood who gives birth to her second child with Rh-positive blood
D) A man with Rh-negative blood who is transfused with blood that has antigen D

Accepted Answer

Type O blood is considered the universal donor and can be transfused to any blood type without causing an immune response, making it the least likely to cause a problem.