A physical quantity of the dimensions of length that can be formed out of c, G and `(e^(2))/(4pi in_(0))` is [c is velocity of light G is universal constant of gravitation and e is charge : ]:

Options

A. `(1)/(c)G(e^(2))/(4piin_(0))`
B. `(1)/(c^(2))[G(e^(2))/(4piin_(0))]^(1//2)`
C. `c^(2)[G(e^(2))/(4piin_(0))]^(1//2)`
D. `(1)/(c^(2))[(e^(2))/(G4piin_(0))]^(1//2)`

Answer

B