A particular is considered to be nano when its radius in the region.

A

$$10^{-11}$$ to $$10^{-10}$$

B

$$10^{-10}$$ to $$10^{-9}$$

C

$$10^{-9}$$ to $$10^{-8}$$

D

$$10^{-8}$$ to $$10^{-7}$$