The potential of the electric field produced by a point charge at any point (x,y,z) is given by `V=3x^2+5`, where x,y,z are in metres and V is in volts. The intensity of the electric field at (-2,1,0) is

Options

A. `+12Vm^(-1)`
B. `-12Vm^(-1)`
C. `+17 Vm^(-1)`
D. `-17Vm^(-1)`

Answer

A