What Happens in General When Ultraviolet Radiation Passes Through a Tube

What happens in general when ultraviolet radiation passes through a tube of cool hydrogen gas?

A) Radiation at all wavelengths is absorbed, reducing the intensity at all wavelengths uniformly.
B) It is unhindered except at the specific wavelengths of the Lyman series, L $\alpha$ , Lß, etc, which are absorbed by the atoms.
C) It is unhindered except the Lyman L $\alpha$ wavelength, which is absorbed by the atoms.
D) It is unhindered since the hydrogen gas is cool and cannot absorb energy.