What is the simplified form of the function f(x)=(x^3+4x+9)/(sqrt(x))?
A) (x^3+4x+9)/(x^(1/2))
B) (x^3+4x+9)/(x^(1/2)+1)
C) (x^3+4x+9)/(x^(1/2)-1)
D) (x^3+4x+9)/(x^(1/2)+2)