Multiply, Then Simplify the Product $(\sqrt{5 x}+5)(\sqrt{3 x}+3)$ A) $x \sqrt{15}+\sqrt{3 x}+15$

Multiple Choice

Multiply, then simplify the product. Assume that all variables represent positive real numbers.
- $(\sqrt{5 x}+5) (\sqrt{3 x}+3)$

A) $x \sqrt{15}+\sqrt{3 x}+15$
B) $x \sqrt{15}+15$
C) $x \sqrt{3}+15$
D) $x \sqrt{15}+3 \sqrt{5 x}+5 \sqrt{3 x}+15$