[单选题]
16.45: Light of wavelength 250 nm shines onto a metallic sui;cl- d*pve2irface. It is knoithzp811x;kf wn that the electrons ejected from the surface range in speed as 0 ≤ v ≤ 4.85× 105 m/s. What is the work func1ht1xf zk8ip;tion of the surface?
A. 4.97 eV
B. 1.60 eV
C. 3.63 eV
D. 4.30 eV
E. 1.34 eV
