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

The property 'uses platform' applies to instances of 'software', and 'software before Microsoft 2007' is a subclass of 'software'. Which class can appear as the value of 'uses platform' for instances of 'software before Microsoft 2007'?

A. operating system
B. Eiffel
C. SBML
D. Racket

Answer: operating system