Arrange the following stages of decomposition of landfill materials in their preferred sequence from initial to last.
A. Acid phase
B. Aerobic phase
C. Unsteady methanogenesis
D. Steady methanogenesis
Choose the correct answer from the options given below:
1
A, B, C, D
2
B, A, C, D
3
B, A, D, C
4
A, B, D, C