Integrate (dx)/(x√(4x2-36)). Which of the following options represents the correct integral of the given expression?

A. ∫(dx)/(x√(4x2-36))
B. ∫(dx)/(√(4x2-36))
C. ∫(dx)/(2x√(4x2-36))
D. ∫(dx)/(4x√(4x2-36))