In the following questions six sentences are given. Further, these sentences…

In the following questions six sentences are given. Further, these sentences may or may not form a contextually meaningful sequence. You have to rearrange these sentences to make a contextually meaningful paragraph. The sentence (F), which has already been highlighted, would be the LAST sentence after rearrangement. Later, answer the follow-up questions.
(A) The train initially operated on horse-drawn traffic were later replaced in 1856 by steam locomotives.
(B) The ability of Serbian Railways to transport goods and people efficiently made economic development possible.
(C) The history of rail transport in Serbia began in the mid-19th century when most of the territory was still held by the Austro-Hungarian and Ottoman Empires.
(D) Part of the line was located in Serbia passing through Bela Crkva while the rest is in Romania.
(E) The first rail line on the present-day territory of Serbia was inaugurated on 20 August 1854, between Lisava-Oravica-Bazijaš .
(F) It continued with modified business activity: engineering and technical consulting, consulting activities in the field of information technology and other information technology services etc

Which of the following would be the FIRST sentence after rearrangement?