The gold numbers of protective colloids `A, B, C,` and `D` are `0.04, 0.002, 10` , and `25` , respectively. The protective powers of `A, B, C` , and `D` are in the order

Options

A. `A lt B lt C lt D`
B. `B lt A lt C lt D`
C. `D lt C lt A lt B`
D. `D lt C lt B lt A`

Explanation

Smaller is the 'gold number, of protective colloid, greater is protective power.