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

After reasoning over the ontology, which class is one valid inferred class for the instance 'pT1a (kidney)'? Context: A pathologic primary tumor stage for kidney according to AJCC 7th edition indicating that the tumor is 4 cm or less.

A. Time clause
B. categorical value specification
C. ALL/AML data set
D. application programming interface

Answer: categorical value specification