OBA smoke

[plloyd1010]

Rule 9.3 states that up to 3 off-board batteries may combine in one fire mission.For high explosive, that makes sense. But could 3 batteries have a combined smoke mission? If they do, would they be required to place smoke in the same hex? Would they each be able to place individual smoke counters as desired? Onboard artillery/mortars, activated together, are not required to place smoke in the same hexes.

This came in a game, though not one of mine. It raises the question of what the spotter would be able to coordinate. I can see the oprions breaking 4 ways.

1. OBA missions are confined to a single hex, regardless if they are fire or smoke missions.
   
2. Multi-battery OBA smoke missions may be placed any hexes on the board, provided the placement hexes are visible to the designated spotter.
   
3. Multi-battery OBA smoke missions may be placed any where on the board, provided that the placement hexes are visible to a spotter.
   
4. Multi-battery OBA smoke missions may be placed any where on the board, provided the placement hexes are visible to the designated spotter and are contiguous. (i.e. each placement hex is adjacent to another where there is more than on battery firing)
   

Now on to the poll.