Find the value of ( int frac{sec^4 (x)}{ sqrt{tan (x)}} dx ).

• A. ( frac{2}{5} sqrt{tan u2061(x)}[5+sec^2 u2061(x)] )
• B. ( frac{2}{5} sqrt{sec u2061(x)}[5+tan^2 u2061(x)] )
• C. ( frac{2}{5} sqrt{tan u2061(x)}[6+tan^2 u2061(x)] )
• D. ( frac{2}{5} sqrt{tan u2061(x)}[5+tan^2 u2061(x)] )