[ A ] 9 

[ B ] 7  
[ C ] 5  
[ D ] 6 
[ A ] 9 

[ B ] 7  
[ C ] 5  
[ D ] 6 
Answer : Option D 
Explanation : 
59535 = $(3)^5$ Ã— $(5)^1$ Ã— $(7)^2$ To make above number a perfect suqre we have to multiply it by 3 and 5 i.e. 15. Sum of digit i.e. x = 1 + 5 = 6 
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