Solve For $x$ Assume That $a$ And $b$ Represent Positive Real Numbers $25 x^{2}=64 a$

Multiple Choice

Solve for $x$ . Assume that $a$ and $b$ represent positive real numbers.
- $25 x^{2}=64 a$

A) $\left\{\frac{-8 a}{5}, \frac{8 a}{5}\right\}$

B) $\left\{\frac{-8 \sqrt{a}}{5}, \frac{8 \sqrt{a}}{5}\right\}$

C) $\left\{\frac{-\sqrt{8 a}}{5}, \frac{\sqrt{8 a}}{5}\right\}$

D) $\left\{\frac{-64 \sqrt{a}}{25}, \frac{64 \sqrt{a}}{25}\right\}$