Which of the following does NOT correctly describe the absolute value parent function?
A. The function has an axis of symmetry at \( x=0 \), so it can be reflected over \( x=0 \) without changing.
B. The function has a vertex at \( (0,0) \).
c. The function is defined for all real numbers.
D. The function increases over the interval \( (-\infty, 0) \) and decreases over the interval \( (0, \infty) \).