Cat 3B. The DH is either a positive number (and there aren’t many around anymore) or it’s no DH, not DH 0’. On my ac where we set 0’ because it doesn’t go any lower there are no auto calls of ‘approaching DH or minimums’ and 0’ actually means NO DH. So providing everything keeps working (ASA doesn’t say MANLAND, Flare annunciates) it will land with no requirement for any visual reference.