Expand $\left(\frac{2x}{3} + \frac{4y}{5}\right) \left(\frac{2x}{3} - \frac{4y}{5}\right)$.
- A$\frac{4}{9}x^2 + \frac{16}{25}y^2$
- B$\frac{4}{9}x^2 - \frac{16}{25}y^2$
- C$\frac{2}{9}x^2 - \frac{4}{25}y^2$
- D$\frac{4}{3}x^2 - \frac{16}{5}y^2$
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