The value of $\frac{5-\sqrt{4}}{5+\sqrt{4}}$ is
(A) $\frac{3}{7}$
(B) $\frac{1}{9}$
(C) $-\frac{11}{21}$
(D) 0
(E) $\frac{1}{3}$
Calculating,

$$
\frac{5-\sqrt{4}}{5+\sqrt{4}}=\frac{5-2}{5+2}=\frac{3}{7}
$$

Answer: (A)