In the figure, WM = MY = 11 in, and XM = MZ = 8 in. Is quadrilateral WXYZ a parallelogram? Why or why not?
 Question 15 options:
 A) 
 No, because the diagonals aren't congruent.
 B) 
 No, because both diagonals bisect each other.
 C) 
 There isn't enough information.
 D) 
 Yes, because both diagonals bisect each other.