The collection efficiency of cyclone separators increases with:
1. Decreasing particle size
2. Increasing particle density
3. Decreasing gas velocity
4. Increasing number of gas revolutions
5. Increasing cyclone diameter
Which of the above statements are correct?
(A) 1, 3 and 4 only (B) 2 and 4 only
(C) 2, 4 and 5 only (D) 1, 2, 3, 4 and 5