A developer modified the default image metadata schema to include a text field with the property 'myProject:photographer

[answerhappygod]

A developer modified the default image metadata schema to include a text field with the property 'myProject:photographer'. While testing, the developer edited the metadata of an asset and entered the name 'Sebastião Salgado' onto the custom field. However, the developer encountered an issue and noticed that the value of the custom field is not displaying on a component.
What is a possible cause of this issue?

A. The namespace 'myProject' isn't registered.
B. The text field does NOT accept special characters.
C. The property name 'myProject:photographer' is too long.
D. The property 'myProject:photographer' already exists and is causing conflicts.