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Heat treatment of muscular pain involves...

Heat treatment of muscular pain involves radiation of wavelength of about 900nm. Which spectral line of H-atom is suitable for this purpose ? `[R_(H)=1xx10^(5)cm^(-1), h=6.6xx10^(-34)Js, c=3xx10^(8)ms^(-1)]`

A

Paschen ,`oo rarr 3`

B

Paschen ,`5 rarr 3`

C

Balmer `oo rarr 2`

D

Lyman ,`oo rarr 1`

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