<h2>Answer: Oil </h2>
Oil is the main resource that Persia (Iran) has and until 2006 it was estimated that it was the fourth largest producer of oil in the world.
Taking into account that the world is still very dependent on this fossil fuel, it makes this resource of great importance for this region in its relationship with neighboring countries.
If the reservoir has a dam, then it is A. But since your asking about just a reservoir, then the answer is B. If you think about it, a reservoir is almost like a lake, and it can overflow as well.
