You Are Analyzing DNA from a Crime Scene,but You Have

You are analyzing DNA from a crime scene,but you have a very limited budget.Instead of looking at the 15 STR sites generally used to create a DNA profile,you decide to only look at eight STR sites.There are only two possible suspects in the crime,and they are brothers.Do you think the eight STR sites you examine will be adequate to make a positive identification to determine which brother committed the crime?

A) Yes,because five or more sites are enough to identify most individuals.
B) Yes,because siblings only share seven or eight sites,so eight STRs will be enough.
C) No,because siblings have more similar DNA profiles than unrelated people.
D) No,because siblings will have identical DNA profiles,even with 15 STRs.
E) STRs cannot be used to distinguish between siblings.