Which of the following order is correct regarding the thickness of lay – McqOptions

MCQOPTIONS

1.	Which of the following order is correct regarding the thickness of layer of the materials used in the mixed media filter?$
A.	Anthracite coal < Sand > Garnet sand
B.	Anthracite coal > Sand >> Garnet sand
C.	Anthracite coal = Sand = Garnet sand
D.	Anthracite coal < Sand < Garnet sand
Answer» C. Anthracite coal = Sand = Garnet sand

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