Connor purchases the subsurface rights to Alex's 15 acres of land. Alex's land includes a house, a barn, a pond and corn, which has not been harvested. Unfortunately, while Connor is installing an oil rig to pump oil on Alex's property, the barn collapses. Who will most likely be held responsible for the damage to the barn?
1) Connor
2) Alex as they are jointly liable
3) Alex
4) No one - it was probably a natural act that caused the damage