A Patient Has Become a Candidate to Donate Organs in Town

A patient has become a candidate to donate organs in Town A. Based on the UNOS priority system, which potential recipient would be the best candidate to receive a kidney transplant?

A) A patient on dialysis who lives in Town A and has been on the transplant list for 3 years
B) A patient with acute renal failure, the same blood type, and all matching antigens who lives in Town A
C) A patient on dialysis with compatible blood type and six matching antigens who lives in Town B (60 miles away)
D) A patient on dialysis who lives in Town B (60 miles away) and has been on the transplant list for 4 years