Task: Instance Class Understanding (ontology: Sciences/Computer_Science)

Which of the following classes does 'G4 (Fuhrman)' belong to as one valid explicit type? Context: A histologic grade according to the Fuhrman Nuclear Grading System indicating that nuclei arei bizarre and multilobulated, 20um or greater and nucleoli are prominent and chromatin clumped.

A. performance status value specification
B. histologic grade according to the Fuhrman Nuclear Grading System
C. pathologic distant metastases stage for colon according to AJCC 7th edition
D. pathologic lymph node stage for kidney according to AJCC 7th edition

Answer: histologic grade according to the Fuhrman Nuclear Grading System