Why is combustion rate faster when the usage of pulverized coal is done in pulverized fuel handling?

For using fuel in powdered form

The speed at which the coal is fed

Why is combustion rate faster when the usage of pulverized coal is don

1.	Why is combustion rate faster when the usage of pulverized coal is done in pulverized fuel handling?
A.	Due to greater surface area
B.	For using fuel in powdered form
C.	Decrease in excess air
D.	The speed at which the coal is fed
Answer» B. For using fuel in powdered form