In the following question, two columns are given, containing three phrases each. A phrase from the first column may or may not connect with a phrase from the second column to make a grammatically and contextually correct sentence. There are five options, four of which display the sequence(s) in which the phrases can be joined to form a correct sentence. If none of the phrases make a correct sentence, mark ‘None of these’ as your answer.

Column 1	Column 2
(A) The article talks about recent research	(D)  another study by the same authors.
(B) At the same time the temperature	(E) applauded by some and criticized by other experts.
(C) The study again has been	(F) is already reducing the oxygen availability in many parts of the sea.