Conditions – (i) If the second element and the last element are perfect squares, then the second and last elements are to be coded as ©. (ii) If the first element is a symbol and the fourth element is a number, then the first element is to be coded as the code of the fourth element. (iii) If both the second and third elements are symbols, then the codes of these two (second and third elements) will have to be interchanged. What will be the code for the following group? 7 $ @ 5 4