Direction: In the following question, two columns are given containing three phrases each. In the first column phrases are A, B, and C and in the second column, the phrases are D, E, and F. 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 phrases can be joined to form a grammatically and contextually correct sentence. If none of the options given forms a correct sentence after combination, select 'None of these' as your answer.

Column (1)	Column (2)
(A) Tree plantation is significant	(D) by painful experience.
(B) He had learned his lesson	(E) in the current age of climate change.
(C) Air pollution has many	(F) bad effects on the health of people.