If ABCD is a square, then
¯¯¯¯¯¯AB+2¯¯¯¯¯¯BC+3¯¯¯¯¯¯CD+4¯¯¯¯¯¯DA =
4 ¯¯¯¯¯¯AC
3 ¯¯¯¯¯¯AC
2 ¯¯¯¯¯¯CA
¯¯¯¯¯¯AC
The correct Answer is:C
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