What is the square root of i, where \(= \sqrt { - 1}\) ?

• A. \(\frac{{1 + {\rm{i}}}}{2}\)
• B. \(\frac{{1 - {\rm{i}}}}{2}\)
• C. \(\frac{{1 + {\rm{i}}}}{{\sqrt 2 }}\)
• D. None of the above