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The electric potential decreases uniform...

The electric potential decreases uniformly from V to -V along X-axis in a coordinate system as we moves from a point `(-x_(0), 0)` to `(x_(0), 0)`, then the electric field at the origin:

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The correct Answer is:
B
`E=-((delV)/(delx)hati+(del V)/(del y)hatj+(delV)/(del z)hatk)`
Here `(del V)/(del x)=-V/X_(0) :. E_("min")=V/x_(0) hat(i)`
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