Pentagon A B C D E is reflected across the line of reflection m to pentagon A prime B prime C prime D prime E prime. Pentagon A prime B prime C prime D prime E prime is rotated about point C prime 180 degrees clockwise.
Which rule describes the composition of transformations that maps figure ABCDE to figure A"B"C'D"E"?

90 degree rotation about point C prime composition reflected across line m
Reflected across line m composition 90 degree rotation about point C prime
180 degree rotation about point C prime composition reflected across line m
Reflected across line m composition 180 degree rotation about point C prime