If the specific gravity and voids in soil sample are G and e respectively, the hydraulic gradient i, is
(A) (G - 1)/(1 + e)
(B) (G + 1)/(1 - e)
(C) (1 - G)/(1 + e)
(D) (1 + G)/(1 + e)
(A) (G - 1)/(1 + e)
(B) (G + 1)/(1 - e)
(C) (1 - G)/(1 + e)
(D) (1 + G)/(1 + e)