Column A	Column B	Column C
(a) Wood was used	(i) to meet the future	(i) is limited
(b) The scientist Kalam is concerned	(ii) of hydrocarbon energy	(ii) of current civilization
(c) It is clear that	(iii) energy source	(iii) future energy crisis
(d) With the discovery of	(iv) about mankind's	(iv) lighting and cooking
(e) Hydrocarbon is a primary	(v) as the means of heating	(v) energy challenges of heating the world
(f) The present stock	(vi) the era of wood and biomass	(vi) of energy has changed
(g) It will not be sufficient	(vii) petroleum and coal, people's source	(vii) will end soon