Which of the following best explains why this relation is not a function?
A The input includes 0.
B The input is mapped to the same value as the output.
C One input value is mapped to two different output values.
D Two different input values are mapped to the same output value.
![Which of the following best explains why this relation is not a function A The input includes 0 B The input is mapped to the same value as the output C One inpu class=](https://us-static.z-dn.net/files/df3/89cfb7985fe813bb5c2a3734c67ed713.png)