A charge of 4 µC is to be divided into two. The distance between the two divided charges is constant. The magnitude of the divided charges so that the force between them is maximum, will be:
(A) 1 µC and 3 µC
(B) 2 µC and 2 µC
(C) 0 and 4 µC
(D) 1.5 µC and 2.5 µC