Simplify the given expression.
$$\left(5x + 8y\right) \left(25x^{2} + 64y^{2} - 40xy\right)$$

A

$$125x^{3} − 512y^{3}$$

B

$$25x^{3} + 64y^{3}$$

C

$$125x^{3} + 512y^{3}$$

D

$$25x^{3} − 64y^{3}$$