question_answer

Select options showing a sensible and meaningful serial order of the jumbled sentences.

[a] Most of them are combinations of hydrogen and carbon in varying proportions.

[b] The products obtained after refining are used for different purposes.

[c] Crude oil comes out of the earth as a strong-smelling, thick, black liquid.

[d] They contain various impurities, and so it is necessary to refine crude oil before it can be used.

[e] It is a complex mixture of many different substances, who have their own individual qualities.

A)  c, e, a, d, b                          

B)  b, d, c, e, a   

C)  e, b, a, c, d        

D)         c, e, d, b, a