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

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

A. Public contract
B. Briefing
C. Procedure void
D. Procedure waive

Answer: Public contract