2. Given three vertices of a parallelogram are $(4,2),(5,7),(-3,4)$. Then the fourth vertex cannot be
A. $(12,5)$
B. $(-2,9)$
C. $(-4,-1)$
D. $(3,7)$
2. D Hint: Use the property that the diagonals of a parallelogram bisect each other and the midpoint coordinate formula.