Mathematics for IGCSE & O level - Functions (Section 3 - No. 11)

What is the range of the function g(x)=x² if the domain is {-2,-1,0,1,2}?

{0, 1, 2, 4}

{0, 1, 4}

{-4, -1, 0, 1, 4}

{-2, -1, 0, 1, 2}

Calculating g(x) at each input from the domain.