If the longest wavelength in the ultraviolet region of hydrogen spectrum is $$\lambda_o$$ then the shortest wavelength in its infrared region is :

A

$$\frac{46}{7} \lambda_o$$

B

$$\frac{20}{3} \lambda_o$$

C

$$\frac{36}{5} \lambda_o$$

D

$$\frac{27}{4} \lambda_o$$