已知函数\(f(x)=\ln ( \sqrt {4x^{2}+1} +2x)\)，则\((\:\:\:\:)\)
A. \(f(\log _{3} \dfrac {1}{4} ) < f(1) < f(\ln \dfrac {1}{2} )\)
B. \(f(\ln \dfrac {1}{2} ) < f(\log _{ \frac {1}{3}} 4) < f(1)\) C. \(f(1) < f(\ln 2) < f(\log _{3} 4)\) D. \(f(\ln \dfrac {1}{2} ) < f(1) < f(\log _{3} 4)\)
