What is the range of f(x)=4−∣x−1∣f(x) = 4 - |x-1|f(x)=4−∣x−1∣?
(−∞,4](-\infty, 4](−∞,4]
[4,∞)[4, \infty)[4,∞)
(−∞,1](-\infty, 1](−∞,1]
[1,4][1, 4][1,4]