The positive square root of $$(\sqrt{48}-\sqrt{45})$$ is

A

$$\frac{\sqrt[4]{3}}{2} (\sqrt{5}-\sqrt{3})$$

B

$$\frac{\sqrt[4]{3}}{\sqrt{2}}(\sqrt{5}-\sqrt{3})$$

C

$$\frac{\sqrt{2}}{\sqrt[4]{3}}(\sqrt{5}-\sqrt{3})$$

D

$$\frac{\sqrt{2}}{\sqrt[4]{3}}(\sqrt{5} + \sqrt{3})$$