Correct option is A)
This problem aims to show you another sort of series Look carefully It is not a single sequence but two sequence intertwined
One sequence is 1, 2, 3 and the other is 1, 4 , 9
I hope you are able to recognise the second sequences It is 12,22,32,12,22,32,
so the final sequence will be 1,1,2,4,3,9,4,16,5,25.