Task: Property Constraint Reasoning (ontology: Sciences/Computer_Science)

The property 'has specified data input' applies to instances of 'software', and 'ProteomicsTools' is a subclass of 'software'. Which class can appear as the value of 'has specified data input' for instances of 'ProteomicsTools'?

A. software development
B. realizable entity
C. data item
D. datum label

Answer: data item