The low pressure air entering into the extension grate is supplied to ______________ in the multi retort stoker.

The low pressure air entering into the extension grate is supplied to

1.	The low pressure air entering into the extension grate is supplied to ______________ in the multi retort stoker.
A.	At incandescent zone
B.	Thinner fuel bed
C.	At inlet dampers
D.	At extension grate
Answer» C. At inlet dampers