Which diagram represents rx ◦ RO,180°? Triangle A B C is reflected across the line of reflection x to form triangle A prime B prime C prime. Triangle A prime B prime C prime is rotated about point O 180 degrees clockwise to form Triangle A double-prime B double-prime C double-prime.

Triangle A B C is rotated about point O 180 degrees clockwise to form triangle A prime B prime C prime. Triangle A prime B prime C prime is reflected across the line of reflection x to form Triangle A double-prime B double-prime C double-prime

Triangle A B C is rotated about point O 90 degrees to form triangle A prime B prime C prime. Triangle A prime B prime C prime is rotated another 90 degrees to form triangle A double-prime, B double-prime, C double-prime. Line of reflection x is below the triangle.