Determine a Quadratic Function That Results When Applying the Given $f(x)=x^{2}$

Multiple Choice

Determine a quadratic function that results when applying the given shifts to the graph of $f(x) =x^{2}$ .
-Shift 20 units up.

A) $f(x) =(x-20) ^{2}$
B) $f(x) =(x+20) ^{2}$
C) $f(x) =x^{2}+20$
D) $f(x) =x^{2}-20$