In a geometric progression with positive common ratio, the ratio of $$13^{th}$$ term to the $$7^{th}$$ term is 27 : 1 then the ratio of its $$9^{th}$$ term to $$16^{th}$$ term is

A

$$\frac{1}{3\sqrt{3}}$$

B

$$\frac{1}{9}$$

C

$$\frac{1}{9\sqrt{3}}$$

D

$$\frac{1}{27\sqrt{3}}$$