Rationalize the Numerator $\frac{\sqrt{5 x}+2}{7}$ A) $\frac{5 x-4}{7(\sqrt{5 x}+2)}$ B) $\frac{5 x-2}{7(\sqrt{5 x}+2)}$

Multiple Choice

Rationalize the numerator. Assume that all variables represent positive real numbers.
- $\frac{\sqrt{5 x}+2}{7}$

A) $\frac{5 x-4}{7(\sqrt{5 x}+2) }$

B) $\frac{5 x-2}{7(\sqrt{5 x}+2) }$

C) $\frac{5 x-2}{7(\sqrt{5 x}-2) }$

D) $\frac{5 x-4}{7(\sqrt{5 x}-2) }$