Find the Distance Between the Pair of Points $( - 3 , - 1 )$

Multiple Choice

Find the distance between the pair of points.
- $( - 3 , - 1 )$ and $( 1 , - 3 )$

A) $2 \sqrt { 5 }$
B) $12 \sqrt { 3 }$
C) 12
D) 6