Please choose the correct ending to complete the given sentence: Tai chi: The instructors wearing blue robes are showing the basic moves used in tai chi. They are swaying their hands above their heads from left to right. then the instructor

Ending1: demonstrates arm strength by tapping his right arm over his extended left arm. Ending2: turned around and walked back towards him and started and rubbed his face in his hand. Ending3: does the same tai chi move in the demonstrated. Ending4: of the groups group is in the back demonstrating by doing a squat posture.

Answer format: ending1/ending2/ending3/ending4