Directions: In the given sentence, three words are marked as (A), (B), and (C). These words may or may not be placed in their right places. Four options with different arrangements of these words are given below, mark the option with the correct arrangement as your answer. If no change is required mark 'No rearrangement required' as your answer.

If you suspect that 21st-century technology(A) has broken your brain, it will be reassuring(B) to know that attention(C) spans have never been what they used to be.