Consider the following materials:

1. Agricultural residues

2. Corn grain

3. Wastewater treatment sludge

4. Wood mill waste

Which of the above can be used as feedstock for producing Sustainable Aviation Fuel?

1. (a) 1 and 2 only
2. (b) 3 and 4 only
3. (c) 1, 2, 3 and 4Correct answer
4. (d) 1, 3 and 4 only

Answer: (c)