If 'S' is the amount available after 'n' interest periods for an initial principal 'P' with the discrete compound interest rate 'i', the present worth is given by
(A) (1 + i)n/S
(B) S/(1 + i)n
(C) S/(1 + in)
(D) S/(1 + n)i
(A) (1 + i)n/S
(B) S/(1 + i)n
(C) S/(1 + in)
(D) S/(1 + n)i