Directions: In the following sentence, 4 words are given in bold. Two or more of these words are incorrectly placed and need to be interchanged. If there is no need for interchanging then ‘No Error’ can be selected.  

The Baghjan blowout “could be the most potency (A) onshore blowout so far in the world as it subsisted (B) for more than five months without any change in its humungous (C) or exhausting of the well,” the report affirmed (D).