A Business Rivalry 1

Jim's Gin Mill and Tom's Turkey Tavern compete for pretty much the same crowd. Each can choose between strategies of offering free snacks during happy hour or not offering free snacks. The payoffs are
Tom
Snacks No Snacks
Jim Snacks 20,20 50,-20
No Snacks -20,50 30,30

If each assumes the strategy chosen is given, and chooses his own best (or least bad) strategy, what will happen?

only Jim offers snacks
only Tom offers snacks
neither offers snacks
both offer snacks
both gain