Which transformations are needed to change the parent sine function to the sine function shown in the graph?
A
vertical stretch of 1 half , horizontal compression to a period of 2 pi , vertical shift of 1 unit up, phase shift of pi units leftB
vertical stretch of 2 , horizontal compression to a period of 4 pi , vertical shift of 2 units up, phase shift of pi units leftC
vertical compression of 1 half , horizontal stretch to a period of 4 pi , vertical shift of 1 unit up, phase shift of pi units leftD
vertical compression of 1 half , horizontal stretch to a period of 2 pi , vertical shift of 1 unit down, phase shift of pi units left