(b) Revenue, direct costs, overheads (given) – 1 mark
Waste treatment costs – 1 mark
Total net profit over LC (before other LC costs) – 1 mark
Scientific study – 1 mark
Decommissioning cost – 1 mark
R&D cost – 1 mark
Total litres – 1 mark
Average profit per litre over LC – 1 mark
Comments – up to 3 marks
Maximum 9 marks