Trepanation, the surgical drilling of holes in the human skull, was a medical intervention practiced about 9,000 years ago presumably to cure patients of epilepsy, migraine, skull fractures and certain mental disorders. Many of the prehistoric and pre modern trepanated skulls had signs of skull tissue regrowth indicating that the surgery was (i) $\(\qquad\)$ . There is also some evidence that trepanation was also a form of emergency surgery to treat victims of battle with head injuries (ii) $\(\qquad\)$ with primitive weapons like the clubs and slings. Typically, (iii) $\(\qquad\)$ of a fractured skull were removed and blood clots underneath the injured spot were cleared by surgeons.

Blank (i)	Blank (ii)	Blank (iii)
A. non fatal	D. pummelled	G. severed fragments
B. absolutely lethal	E. guaged	H. indispensable parts
C. multiple invasive	F. inflicted	I. intact chunks