Answer:b) A bloodstain found on the defendant’s jacket that subsequently matches the victim’s DNA profile
Explanation:
A bloodstain of a victim on a defendant's jacket means the person was there in the time of death of the victims.
Which may mean that when the defendant killed the person the blood of the victim splashed into his jacket probably during the time when the defendant stabs him .
The jury will then have to find probably the motive that would have led the defendant to kill the victim .