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) High exposure to early life stress at  home,	(D) may put children at a higher risk of attention and thought problems.
(B)Early life stress is common	(E) with greater exposure to air pollution.
(C) The new research analyzed data from	(F) combined effects of air pollution and early life stress on school-age children.