Investigator McReynolds has been tasked with determining which type of knife a victim was stabbed with. Which procedure would help Investigator McReynolds get the most accurate data for his case?

A) Test various types of knives to see which "wound" matches the victim's wound most closely.

B) Examine various types of knives in an online catalog until he finds one he thinks could have made the wound.

C) Have an eyewitness describe the size and color of the knife for an artist.

D)Call knife manufacturers and ask whether their knives could make the type of wound found on the victim.