The value of q/m for a cathode-ray particle is about 1800 times greater than the q/m for a hydrogen ion (H ).

I - The charge on the cathode-ray particles is 1800 times greater than the charge on a hydrogen ion.

II - The charge on a cathode-ray is 1/1800 of the charge on a hydrogen ion.

III - The mass of a cathode-ray particle is 1800 times greater than the mass of a hydrogen ion.

IV - The mass of a cathode-ray particle is 1/1800 of the mass of a hydrogen ion.

Which two conclusions are supported by the observations, even though they may not necessarily be factual.