Light of wavelength 5000 Å and intensity of `3.96 xx 10^(-3) watt//cm^(2)` is incident on the surface of photo metal . If 1% of the incident photons only emit photo electrons , then the number of electrons emitted per unit area per second from the surface will be
A. `9.82 xx 10^(17) m^(-2)//2`
B. `9.82 xx 10^(13) m^(-2) // s`
C. `9.82 m^(-2)//s`
D. `none of these
