Consider the following pairs of functions: f(n), g(n). For which pair, the functions are such that f(n) is O (g(n)) and g(n) is not O (f(n))? (A) f(n) = n^2, g(n) = 2n^2 + 7 (B) f(n) = log n, g(n) = log(n^2) (C) f(n) = 17, g(n) = n + 1 (D) f(n) = n, g(n) = 3000n + 1 (E) f(n) = log n, g(n) = 1