In which of the following pairs,the outermost electronic configuration will be the same?

• A
  $Cr^{+}$ and $Mn^{2+}$
• B
  $Ni^{2+}$ and $Cu^{+}$
• C
  $Fe^{2+}$ and $Co^{+}$
• D
  $V^{2+}$ and $Cr^{+}$