Find the Midpoint of the Line Segment Joining the Points $( 4,6 )$

Multiple Choice

Find the midpoint of the line segment joining the points A and B.
-A = (3, 5) ; B = (9, 3)

A) $( 4,6 )$
B) $( 6,4 )$
C) $( 12,8 )$
D) $( - 6,2 )$