I know this has been done to death but as per usual contradictory info causes me to seek help from the helpful:
On what frequencies may an ATIS be transmitted?
a) On VOR, NDB and ILS.
b) On available VHF frequencies VOR and NDB.
c) On VOR only.
d) On VHF communications frequencies only.
In 20 yrs of flying (globally in various oufits), only ever heard it on VHF and VOR. You can use the ILS as an emergency voice frequency from the ATC view point if needs must. However, VHF and VOR only is not an answer, I have looked at several referances for you and definitely not NDB or ILS, sorry but thats the real world answer. So C & D is the correct answer unless you got the answers typed in wrong.
Happy hunting. (ex 74/34/33/73/etc)