Confirmed by sturcture support (green line)
B = 0.382 or of move XA
C = 0.382 or of move AB
D = If the retracement of move B C is 0.382 of move AB then CD should be of move B C.
Consquently, if move B C is 0.886 of move AB then CD should be 2.618 extension of move B C.
CD should be of move XA.