So this happened last night: in the active turn, my opponent lays a mine that is able to detonate on 2 of my troopers on each side of it at different distances, he then proceeds with his next order to activate the trooper that laid the mine and I declare dodge with both of my troopers in the mines trigger area, who does the mine explode on? Is he able to choose his target or does it blow up on the closest one?