please help me
don’t put links i will report
i will mark brainlist if correct

Which of the following could be the equation of the function below
y=0.5cos(2(x-pi/2))+2 y=0.5cos(4(x+pi/2))-2 y=0.5cos(4(x+pi))+2 y=0.5cos(2(x-pi))-2