What is the range of f(x)?
A) { f(x)| –[infinity] < f(x) < [infinity]}
B) { f(x)| –[infinity] < f(x) ≤ 4}
C) { f(x)| 4 < f(x) < [infinity]}
D) { f(x)| 0 ≤ f(x) < [infinity]}