Which graph represents the logarithmic function f(x) = 3log2x? 6 5 4 3 2 6 5 4 3 2 1 + -5-4-3-2 2 3 4 5 -5-4-3-2-1 -1 -2 -3 -2 -3 -4 2 3 4 5 ​