Sludge is removed from the water.
A. 2, 3, 1, 4, 5.
B. 4, 2, 3, 1, 5.
C. 3, 4, 5, 1, 2.
D. 2, 5, 4, 3, 1.
Answer:D
Sludge is removed from the water.
A. 2, 3, 1, 4, 5. B. 4, 2, 3, 1, 5. C. 3, 4, 5, 1, 2. D. 2, 5, 4, 3, 1.