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

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

A. Contract modification
B. Contract activites
C. Contract additional obligations
D. Tender committee

Answer: Contract modification