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

Which of the following definitions best describes the instance 'Stage Unknown (FIGO)'?

A. A International Federation of Gynecology and Obstetrics ovarian cancer stage value specification associated with TNM stage values of T2, N0, and M0.
B. A International Federation of Gynecology and Obstetrics ovarian cancer stage value specification associated with TNM stage values of any T, any N, and M1.
C. A International Federation of Gynecology and Obstetrics ovarian cancer stage value specification associated with TNM stage values of (T0, N0, and M0) or (T1,1a-1c,2,2a-2c, NX, and M0) or (TX, N0,X, M0).
D. A International Federation of Gynecology and Obstetrics ovarian cancer stage value specification associated with TNM stage values of T2c, N0, and M0.

Answer: A International Federation of Gynecology and Obstetrics ovarian cancer stage value specification associated with TNM stage values of (T0, N0, and M0) or (T1,1a-1c,2,2a-2c, NX, and M0) or (TX, N0,X, M0).