If f(x)=4−x2f(x) = 4 - x^2f(x)=4−x2, what is the range for x∈Rx \in \mathbb{R}x∈R?
(−∞,4](-\infty, 4](−∞,4]
[4,∞)[4, \infty)[4,∞)
(−∞,∞)(-\infty, \infty)(−∞,∞)
[0,4][0, 4][0,4]