Match the entries in Column I with those in Column II. Column - I Column - II (a) Carbonization (i) Coke (b) Destructive distillation (ii) Coal (c) Cracking (iii) Petroleum (d) Refining (iv) Hydrocarbons

• A.    a-1, b-2, c-3, d-4    
• B.    a-2, b-1, c-4, d-3    
• C.    The chemical composition of a fuel    
• D.    a-4, b-3, c-2, d-1