Armour Class in HD&D will work like 3rd Ed Damage Reduction. But how do we convert it? (poll 1619980)

Armour Class in HD&D will work like 3rd Ed Damage Reduction. But how do we convert it?

Option 1: Keep the AC values and don't change anything

Option 2: keep the AC values of armour, but reduce natural armour

Option 3: Reduce armour and natural armour bonuses

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See this poll on: https://poll.fm/1619980/embed

Created at Crowdsignal.com