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 Byzantines and the Bulgarians first clashed	(D) who led a combined land and sea operation against the invaders.
(B) Asparukh defeated the Byzantines under Constantine IV,	(E) which allowed itself to panic and be defeated.
(C) Suffering from bad health, the emperor had to leave the army,	(F) when Khan Kubrat's youngest son Asparukh moved westward.