[单选题]
A monochromatic light is incident on the surface of a mg4 d*2fagig3metal with work function 1aex-vk(f/yjzreno2:l l;j 3 2.50 eV. If a 1.0-V stopping potential isenvl-zrj3 / :jkxy(;el1oa 2f required to make the photocurrent zero, what is the wavelength of light?
A. $354 \; nm$
B. $423 \; nm$
C. $497 \; nm$
D. $744 \; nm$