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

After reasoning over the ontology, which class is one valid inferred class for the instance 'pT3a (kidney)'? Context: A pathologic primary tumor stage for kidney according to AJCC 7th edition indicating that the tumor grossly extends into the renal vein or its segmental (muscle containing) branches, or the tumor invades perirenal and/or renal sinus fat (peripelvic) fat but not beyond Gerota fascia.

A. categorical value specification
B. generalization specification
C. plan specification
D. Development status

Answer: categorical value specification