The photoelectric threshold wavelength of silver is $3250\times 10^{-10}\text{m}$. The velocity of the electron ejected from a silver surface by ultraviolet light of wavelength $2536\times 10^{-10}\text{m}$ is nearly: (Given $h=4.14\times 10^{-15}\text{eVs}$ and $c=3\times 10^8{\text{ms}}^{-1}$)

1. A
   $0.6\times 10^6{\text{ms}}^{-1}$
2. B
   $61\times 10^3{\text{ms}}^{-1}$
3. C
   $0.3\times 10^6{\text{ms}}^{-1}$
4. D
   $6\times 10^5{\text{ms}}^{-1}$