Name the spectral series of hydrogen spectrum lying in the infrared region .

Question

$\begin{array}{1 1} \text{Paschen,PFund, Bracket lie in the infra red region } \\ \text{Paschen,Balmen,PFund lie in the infra red region} \\ \text{Paschen,Bracket,Pfund lie in the infra red region} \\\text{Balmer,PFund, Bracket lie in the infra red region}\end{array}$