70 – 90% reduction in thermal energy requirements can be achieved by which one of the following drying methods?

70 – 90% reduction in thermal energy requirements can be achieved by

1.	70 – 90% reduction in thermal energy requirements can be achieved by which one of the following drying methods?
A.	Drum drying
B.	Airless drying
C.	Steam drying
D.	Salt drying
Answer» C.