What effect does changing the function f (x) = 2 sin (x/2)- 1 to the function g(x) = 2 sin (x) - 5 have on the graph of f(x)? O The graph is stretched vertically by a factor of 2 and shifted right 4 units.
O The graph is compressed vertically by a factor of 2 and shifted left 4 units
O The graph is stretched horizontally by a factor of 2 and shifted up 4 units.
O The graph is compressed horizontally by a factor of 2 and shifted down 4 units