area effect in tactical combat

[Justaguy]

Just a quick question, as I can't seem to find this in the rules and I'm not sure how to handle this.
Our group would like to start experimenting with tactical combat and some of the players have area effect powers. How big are the areas on the hex map?

Let's work with an example. X has an affliction with emanation and area effect 1, that's a 2-yard radius. Does this mean:
a) his ability affects the hex he is standing in and all 6 adjacent hexes, let's call this the first ring of hexes (total = 1 hex + 6 hexes in first ring = 7 hexes)
OR
b) his ability also affects the second ring of hexes (total = 1 hex + first ring 6 hexes + second ring 12 hexes = 19 hexes)

Thanks!