In a particle accelerator, a current of `500muA` is carried by a proton beam in which each proton has speed of `3xx10^(7)m//s`. The cross sectional area of the beam is `1.50mm^(2)`. The charge density in this beam in Coulomb/m3 is close to

Options

A. `10^-8`
B. `10^-7`
C. `10^-6`
D. `10^-5`