320p,
A)Indeed you can perform an Autoland with Cat 3 single display on FMA,even CAT2, (autoland is not permited only when CAT 1 is diplay on FMA):But this.. is for the A/C capability only...Now off course you need to have the adequate weather minima as well.
In order words:
-Doesnīt mean that if you have cat2 on FMA you can perform an CATIII approach with Autoland,of course not,you are limited to a CATII approach,By the CATII DH you must have the visual reference to continue.(manual or automatic)
-Cat3 single display on FMA allows you to perform an approach with a minimum DH of 50' (CatIIIA,CatII, CatI wx condition...).
-Cat3 dual display on FMA allow you to perform an approach without DH. (CATIIIB wx).
Well thatīs the only think i can tell you according my limited knownledge..
Hopefully a LVP specialist will give you more infos.