A parallel plate condenser has a unifrom electric field `E (V//m)` in the space between the plates. If the distance between the plates is `d(m)` and area of each plate is `A(m^(2))` the energy (joule) stored in the condenser is
A. `(1)/(2)epsilon_(0)E^(2)`
B. `epsilon_(0)EAd`
C. `(1)/(2)epsilon_(0)E^(2)`
D. `E^(2)Ad//epsilon_(0)`