Match the given medical scenarios to the specialists who are likely to handle them.
1. Henry has been diagnosed with prostate cancer, he has been recommended to meet this specialist.
2. Kelly is suffering from renal failure and has to undergo a process that requires filtering her blood using a machine.
3. Dwayne is experiencing some difficulty while urinating. He has to visit a specialist to conduct some tests to determine the reason.
4. Abner has been given a kidney transplant by this specialist.
a. Pairs
b. medical laboratory technologist
c. urologist
d. nephrologist
e. dialysis technician