In a sample of H-atoms electrons are de-exicited from `4^(th)` excited state to ground state. Which is/are correct statement ?

In a sample of H- atom electrons make transition from 5^(th) excited state to ground state, producing all possible types of photons, then number of lines in infrared region are

In a sample of H- atom electrons make transition from 5^(th) excited state to ground state, producing all possible types of photons, then number of lines in infrared region are

In a H-like sample, electrons make transition from 4^(th) excited state upto 2^(nd) state. Then ,

In a H- like sample electron makes transition from 4th excited state of 2nd state then:

In a H like sample electrons make transition from 4th excited state to 1st state then