Which of the following statement$(s)$ is(are) correct with reference to the ferrous and ferric ions?
- A$Fe^{3+}$ gives brown colour with potassium ferricyanide
- B$Fe^{2+}$ gives blue precipitate with potassium ferricyanide
- C$Fe^{3+}$ gives red colour with potassium thiocyanate
- DBoth $(b)$ and $(c)$
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