The graph of the function f(x) = log4(x-1) can be obtained from the graph of g(x) = log4 x by one of the following actions: (a) shifting the graph of g(x) to the right 1 units; (b) shifting the graph of g(x) to the left 1 units; (c) shifting the graph of g(x) upward 1 units; (d) shifting the graph of g(x) downward 1 units; Your answer is (input a, b, c, or d) The domain of the function f(x) is x > A, find A The value of A is Is the range of the function f(x) still (-, )? Your answer is (input Yes or No) Note: In order to get credit for this problem all answers must be correct.