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

Carbon dioxide emissions must equivalent (A) by the fall (B) of a global lockdown safe (C) every two years for the next decade for the world to keep within roughly (D) limits of global heating.