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

Which of the following definitions best describes the instance 'G4 (WHO)'?

A. A histologic grade for ovarian tumor according to the World Health Organization indicating that the tumor is well differentiated.
B. A histologic grade for ovarian tumor according to the World Health Organization indicating that the tumor is moderately differentiated.
C. A histologic grade for ovarian tumor according to the World Health Organization indicating that the tumor is poorly differentiated.
D. A histologic grade for ovarian tumor according to the World Health Organization indicating that the tumor is undifferentiated.

Answer: A histologic grade for ovarian tumor according to the World Health Organization indicating that the tumor is undifferentiated.