[单选题]
When light of wavelenwa 7shkty5s /20h+0d/oz wy/(rw shwugtxa,ua s;8 rx0ch 350 nm is incident on a metal surface, the stopping pot, xr;auxcs0 a8ential of the photoelectrons is 0.500 eV. What is the threshold frequency?
A. $3.47 \times 10^{14} \; Hz$
B. $3.74 \times 10^{14} \; Hz$
C. $4.73 \times 10^{14} \; Hz$
D. $7.34 \times 10^{14} \; Hz$
