Task: Inferred Instance Class Reasoning (ontology: Sciences/Computer_Science)

After reasoning over the ontology, which class is one valid inferred class for the instance 'Stage IIA (AJCC 7th)'? Context: A clinical tumor stage group according to AJCC 7th edition indicating cancers with increasing tumor or nodal extent but less than in Stage III and with differing characteristics from IIB and IIC.

A. qPCR data
B. licence
C. categorical value specification
D. Obsolete

Answer: categorical value specification