The correct statement is C. One input has more than one output.
A function is a special type of relation in which each input is associated with exactly one output. In the given table:
Input 1 is associated with two different outputs (120 and 140).
Input 4 is associated with two different outputs (450 and 450).
This violates the definition of a function, where each input should have only one corresponding output. Therefore, the correct statement is:
C. One input has more than one output.