The Laplace transform of e i5t where i = √−1, is

• A. \({\rm{F}}\left( {\rm{s}} \right){\rm{ = }}\frac{{\rm{s +5i}}}{{{\rm{s^2 +25}}}}\)
• B. \({\rm{F}}\left( {\rm{s}} \right){\rm{ = }}\frac{{\rm{s -5i}}}{{{\rm{s^2 +25}}}}\)
• C. \({\rm{F}}\left( {\rm{s}} \right){\rm{ = }}\frac{{\rm{s}}}{{{\rm{s^2 +25}}}}\)
• D. None of these