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DIRECTIONS (Qs. 9 - 13): These questions are based on the diagram given below showing four persons stationed at the four corners of a square piece of a plot as shown.  

From the original position given in the above figure, A and B move one arm length clockwise and then cross over to the corners diagonally opposite; C and D move one arm length anti-clockwise and cross over to the corners diagonally opposite. The original configuration ABCD has now changed to

A) CDAB             

B) DACB

C) BDAC                         

D) ACBD

Correct Answer: A

Solution :