This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Ureter derives its blood supply from-a) Renal arteryb) Gonadal vesselc) Common iliac arteryd) Inferior vesical arterye) Superior mesenteric artery 
Select and explain. 
A. abc, B. acd, C. abcd, D. abd
C: abcd
Answer: C: abcd 
Explanation: Blood supply of ureter

Upper part:- It is mainly supplied by the renal artery. It may also receive branches from gonadal or colic vessels.
Middle part:- It receives branches from the aorta. It may also receive branches from gonadal or iliac vessels.
The lower part (pelvic part):- It is supplied by branches from the vesical, middle rectal or uterine vessels.