Select ALL the correct answers. Consider the geometric sequence below. -4, -6, -9, -71-71 " 27 81 Select all functions that define the given sequence. O f(n) = -4. (_3)(0 - 1) f(1) = -4 fin) = ? . f(n - 1), for n = 2, 3, 4, . f(1) = -4 fin) = 4. f(n - 1), for n = 2, 3, 4, . O f(n) = -4. (?) (" - 1) O f(n) = 4. (_?)(" - 1) f(1) = 4 fin) = -. f(n - 1), for n = 2, 3, 4