An electron enters uniform electric field maintained by parallel plates and of value `E V m ^(-1)` with a velocity `v ms^(-1)`, the plates are separated by a distance d metre, then acceleration of the electron in the field is , . Ee x - Ee
Options:
(a) `(Ee)/m`
(b) `(-Ee)/m`
(c) `(Ee)/(md)`
(d) `Ee''d/m`