Part A:
Quadrilateral ABCD is
rotated 90 degrees counterclockwise about the origin to form the quadrilateral A'B'C'D'. What are the signs of the coordinates (x,y) of point C'? 
A: (-4,4)
B: (3,6)
C: (3,2)
D: (-2,-2)

Part B:
Then quadrilateral A’B’C’D is reflected across the x-axis to form quadrilateral A’’B’’C’’D’’. What are the signs of the coordinates (x,y) of point B’’?