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

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

A. Tender
B. Contract economic conditions
C. Contract activites
D. Contract modification

Answer: Contract modification