[单选题]
A monochromatic light is incide;n*xfb,z l9dkix 5um6nt f/b/ :a6eecx 2 jqmk1riur63ron the surface of a metal with work function 2.50 eV. If a 1.0-V stopping potential is required to make the photocurrerkj a e2q16br6/:ie/xf3mrucnt zero, what is the wavelength of light?
A. $354 \; nm$
B. $423 \; nm$
C. $497 \; nm$
D. $744 \; nm$