6. If you advertise and your rival advertises, you each will earn $4 million in profits. If neither of you advertises, you will each earn $10 million in profits. However, if one of you advertises and the other does not, the hospital that advertises will earn $1 million and the non-advertising hospital will earn $5 million. If you and your rival plan to hand your business down to your children (and this "bequest" goes on forever), then a Nash equilibrium is for each hospital to