3. Suppose f(x) = cosa, g(x) = logo and h(x) = r', what of the following is the largest valid domain D and range R of foh log : D - R? [2 marks] (A) D = (1, co) and R = (0, 1) (B) D = [1, oo) and R = [-1, 1] (C) D = (1, co) and R = [0, 1] (D) D = [0, co) and R = (E) D = [0, =] and R = (-0o, 0]