If M(3, 4) Is the Midpoint of the Line Segment $( 5,6 )$

Multiple Choice

If M(3, 4) is the midpoint of the line segment AB, and if A has coordinates (1, 2) , find the coordinates of B.

A) $( 5,6 )$
B) $( 5 , - 6 )$
C) $( - 5 , - 4 )$
D) $( - 3 , - 5 )$
E) $( - 5,6 )$