What is the difference between transparency and explainability as the syllabus uses the terms?

• ATransparency applies to open source models and explainability applies to proprietary ones.
• BTransparency concerns the system as a whole, including data and limitations, while explainability concerns why a particular input produced a particular output.
• CThey are interchangeable terms for the same property.
• DTransparency is a technical property and explainability is a documentation practice.