To remove 3% primary sludge which of the following size of mesh of a cyclone gritter is used?

To remove 3% primary sludge which of the following size of mesh of a c

1.	To remove 3% primary sludge which of the following size of mesh of a cyclone gritter is used?
A.	t100
B.	t150
C.	t65
D.	t28-35
Answer» D. t28-35