Consider the function g(x)=∣x−4∣ defined for all real x. Which of the following is TRUE about g?
a) g is onto R because for every real y there exists x with g(x)=y
b) The range of g does not contain 0, so g is not onto R
c) g is not one-to-one because g(3)=g(5)
d) g is one-to-one because the absolute value makes all outputs unique