A physicist wishes to eject electrons by shining light on a metal surface. The light source emits light of wavelength of 450 nm. The table lists the only available metals and their work functions.
`{:("Metal",W_(0)(eV)),("Barium",2.5),("Lithium",2.3),("Tantalum",4.2),("Tungsten",4.5):}`
Which metal(s) can be used to produce electrons by the photoelectric effect from given source of light?
A. Barium only
B. Barium or lithium
C. Lithium, tantanlum ot tungsten
D. Tungsten or tantalum
