A sewer pipe contains 1 mm sand particles of specific gravity 2.65 and 5 mm organic particles of specific gravity 1.2, the minimum velocity required for removing the sewerage, is

A sewer pipe contains 1 mm sand particles of specific gravity 2.65 and

1.	A sewer pipe contains 1 mm sand particles of specific gravity 2.65 and 5 mm organic particles of specific gravity 1.2, the minimum velocity required for removing the sewerage, is
A.	0.30 m/sec
B.	0.35 m/sec
C.	0.40 m/sec
D.	0.45 m/sec
Answer» E.