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Four identical point masses , each of m...

Four identical point masses , each of mass m and carrying charge `+q` are placed at the comes of a square of sides a' on a frictionless plain surface .If the particles are released simulataneously ,the kinetic energy of the system when they are infinitcly far apart is

A

`(q^(2))/(a)(2sqrt(2)+1)`

B

`(q^(2))/(a)(sqrt(2)+2)`

C

`(q^(2))/(a)(sqrt(2)+4)`

D

`(q^(2))/(a)(sqrt(2)+1)`

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