Traditionally membranes have been classified based on the minimum size of the contaminant that is excluded from passing through the particular membrane. Arrange the following in the correct sequence of decreasing pore size
A. Reverse Osmosis
B. Nanofiltration
C. Microfiltration
D. Ultrafiltration
Choose the correct answer from the options given below
1
A, B, C, D
2
D, C, B, A
3
C, D, B, A
4
D, C, A, B