Dr Reyes, an Archaeologist Who Studies the Skulls of Human

Dr. Reyes, an archaeologist who studies the skulls of human beings who lived thousands of years ago finds that many such skulls had circular holes where part of the skull was missing. Dr. Reyes cites which of the following evidence as support for the conclusion that some of these patients survived this surgical procedure ?

A) Drawings and photographs of people who survived the procedure living with a reduction in their symptoms
B) Writings that were preserved from those who underwent and survived the procedure
C) The existence of cracks leading up to and surrounding the surgical skull hole
D) Growth of the skull bones after the procedure