For octahedral complex, which of the following \[{{d}^{n}}\] configurations of metal cation cannot exist in high spin and low spin forms?

• A. \[{{d}^{3}}\] and \[{{d}^{8}}\]         
• B. \[{{d}^{3}}\] and \[{{d}^{5}}\]
• C. \[{{d}^{3}}\] and \[{{d}^{6}}\]         
• D. \[{{d}^{4}}\] and \[{{d}^{8}}\]