Describe how the transformed function below is obtained from its parent function. y=x^2 4

a.the parent function y=x^2 is shifted 4 units to the left.

b.the parent function y=x^2 is shifted 4 units to the right.

c.the parent function y = x is shifted 4 units to the left.

d.the parent function y= x^2 is shifted 4 units up.