Task: Property Constraint Reasoning (ontology: Legal/Public_Procurement_Ontology)

The property 'Contract modification' applies to instances of 'Public contract', and 'Conclusion contract' is a subclass of 'Public contract'. Which class can appear as the value of 'Contract modification' for instances of 'Conclusion contract'?

A. Contract modification
B. Concept
C. Tender committee
D. Contract object

Answer: Contract modification