How is the graph of g(x) = 2log5(x) - 4 a transformation from that of the parent function f(x) = log5(x)? a. The graph of g(x) is stretched vertically by a factor of 2 and shifted up 4 units.
b. The graph of g(x) is stretched vertically by a factor of 2 and shifted down 4 units.
c. The graph of g(x) is shifted to the left 2 units and shifted down 4 units.
d. The graph of g(x) is stretched horizontally by a factor of 2 and shifted down 4 units.