Find the Coordinates of the Other Endpoint of the Segment $( - 1 , - 1 )$

Multiple Choice

Find the coordinates of the other endpoint of the segment, given its midpoint and one endpoint.
-midpoint $( - 1 , - 1 )$ , endpoint $( 3,1 )$

A) $( 11,5 )$
B) $( - 5,3 )$
C) $( - 5 , - 3 )$
D) $( - 1 , - 7 )$