The answer to your question is: letter C
Step-by-step explanation:
Data
A (-5 , -1)
B (-2, 3)
C (6, -3)
Perimeter = ?
Formula
distance AB Â Â Â
            Â
            Â
                Â
                    d = 5
Distance BC Â Â
            Â
                      Â
            Â
                d = 10
Distance AC Â Â
            Â
            Â
            Â
                d = 11.2
Perimeter = 5 + 10 + 11.2
        = 15 +