Which of the following regarding oxalate compound is/are true?
A. Oxalic acid `(H_(2)C_(2)O_(4))` can be estimated by titratin against either `KOH` or `KMnO_(4)` solution.
B. `KHC_(2)O_(4)` can be extimated by titrating against either `KOH` or `K_(2)CrO_(4)` and in both analyses equivalent weight of `KHC_(2)O_(4)` is 64. `(MW "of" KHC_(2)O_(4) = 128)`
C. `K_(2)C_(2)O_(4)` can be estimated by titrating against either `HCl` or `KClO_(3)` and in both analyses equivalent weight of `K_(2)C_(2)O_(4)` is 83. `(MW "of" K_(2)C_(2)O_(4) = 166)`
D. If `10mL` of a `K_(2)C_(2)O_(4)` solution required `8.0 mL` of a `0.12 M HCl` solution, `10 mL` of the same `K_(2)C_(2)O_(4)` solution would require `9.60 mL` of a `0.02 M` acidified `KMnO_(4)` solution.