Which explains the mapping diagram that shows a relation between X and Y that does not represent a function? Diagram A X -5 L 9 Diagram B X 11 13- 15- 18 25 81 X 9 14. 191 11 13 15 Diagram C Y 9 00 Diagram D Diagram A does not represent a function because two inputs map to the same output. Diagram B does not represent a function because each input maps to an output with the same value as itself. Diagram D does not represent a function because each input maps to the same output. Diagram C does not represent a function because an input maps to more than one output.