what port/service should you look for to attempt a zone transfer?

While footprinting a network, what port/service should you look for to attempt a zone transfer?

A.
53 UDP

B.
53 TCP

C.
25 UDP

D.
25 TCP

E.
161 UDP

F.
22 TCP

G.
60 TCP

Explanation:
IF TCP port 53 is detected, the opportunity to attempt a zone transfer is there.