The diagram illustrates how poly(ethene) can be produced from petroleum. petroleum $\rightarrow$ fuel oil $\rightarrow$ ethene $\rightarrow$ poly(ethene) Identify stages 1, 2 and 3.
- A1 cracking; 2 polymerisation; 3 fractional distillation
- B1 cracking; 2 fractional distillation; 3 polymerisation
- C1 fractional distillation; 2 cracking; 3 polymerisation
- D1 fractional distillation; 2 polymerisation; 3 cracking