A 10-V Stopping Potential Is Required to Make the Photocurrent Zero

A 1.0-V stopping potential is required to make the photocurrent zero when a monochromatic light is incident on the surface of a metal with work function 3.40 eV. The wavelength of light is

A) 248 nm.
B) 365 nm.
C) 544 nm.
D) 775 nm.
E) None of the above is correct.