Answer: D. The length is 13 units.
Explanation:
 (-1, -3 ) Find the difference between the x values and y values. 
 (11, -8) 
-3-(-8) = 5 
-1-11 = -12 now find the absolute values. 
The absolute value of 5 is 5 . The absolute value of -12 is 12. 
Now use the Pythagorean Theorem formula a^2 + b^2 =c^2 where c square is the length between AB. 
5^2 + 13^2 = C^2 
25 + 144 = c^2 
169=c^2 
c= 13