The correct answer is B. Height
Indeed, the stature is the height of a person but it would be a mistake to focus solely on the physical aspect of such trait. It is actually a symbol of Satan's uttermost flaw, his hubris, or in simpler terms is pride. It is quite interesting that as the character evolves so does his stature, which decreases as he is confronted to the failure of his plans which also shows the inevitable outcome of his hubris.