MCQ
The below diagram represent a typical biogas plant. Select the correct option for $A, B$ and $C$ refers to


- A$A-$Sludge, $B-$Dung $+$ water, $C-C H _{4}+ CO _{2}$
- B$A-$Dung $+$ water, $B-$Sludge, $C - CH _{4}+ CO _{2}$
- ✓$A-$Sludge, $B-CH _{4}$ and $CO _{2}, C$-Dung $+$ water
- D$A - CH _{4}+ CO _{2}, B -$ Dung $+$ water, $C-$Sludge
