Which of the following statements is incorrect regarding $Fe^{2+}$ and $Fe^{3+}$ cations?

• A
  $Fe^{3+}$ gives a brown color solution with potassium ferricyanide.
• B
  $Fe^{2+}$ gives a blue precipitate with potassium ferricyanide.
• C
  $Fe^{3+}$ gives a red color solution with potassium thiocyanate.
• D
  $Fe^{2+}$ gives a brown color with ammonium thiocyanate.