In the following question, a sentence is given with four words marked as (A), (B), (C), and (D). These words may or may not be placed in the correct order. Four options with different arrangements of these words have been provided. Mark the option with the correct arrangement as the answer.

Now the big question is how to probity (A) the canker (B) of corruption and restore (C) much needed curb (D) in public life.