A light of amplitude A and wavelength ? is incident on a metallic surface, then saturation current flows is proportional to (assume cut off wave length = ${\lambda_{0}}$) -

Question

( A ) $A,if {\lambda}>{\lambda_{0}}$
( B ) $A^{2},if {\lambda}<{\lambda_{0}}$ <br/> ( C ) $A,if {\lambda}<{\lambda_{0}}$ <br/> ( D ) $A^{2},if {\lambda}>{\lambda_{0}}$