The work-functions for three different metals A, B, and C are W_A,  W_B and W_C respectively with ${\mathrm{W}}_{\mathrm{A}}>{\mathrm{W}}_{\mathrm{B}}>{\mathrm{W}}_{\mathrm{C}}$ The gaph between stopping potential V₀ and frequency v of incident radiation for them would look like

• A

  

• B

  

   

• C

  

• D