The potential at a point $$x$$ (measured in $$\mu m$$) due to some charges situated on the x-axis is given by $$V(x) = 20/(x^2 - 4)$$ Volts. The electric field $$E$$ at $$x = 4 \mu m$$ is given by

A

$$5/3$$ Volt/$$\mu m$$ and in the $$-ve$$ $$x$$ direction

B

$$5/3$$ Volt/$$\mu m$$ and in the $$+ve$$ $$x$$ direction.

C

$$10/9$$ Volt/$$\mu m$$ and in the $$-ve$$ $$x$$ direction

D

$$10/9$$ Volt/$$\mu m$$ and in the $$+ve$$ $$x$$ direction.