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

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

A. An International Federation of Gynecology and Obstetrics cervical cancer stage value specification indicating spread to distant organs.
B. An International Federation of Gynecology and Obstetrics cervical cancer stage value specification indicating tumour involves lower third of the vagina, with no extension to the pelvic wall.
C. An International Federation of Gynecology and Obstetrics cervical cancer stage value specification indicating invasive carcinoma which can be diagnosed only by microscopy, with deepest invasion <5 mm and the largest extension <7 mm.
D. An International Federation of Gynecology and Obstetrics cervical cancer stage value specification indicating extension to the pelvic wall and/or hydronephrosis or non-functioning kidney.

Answer: An International Federation of Gynecology and Obstetrics cervical cancer stage value specification indicating spread to distant organs.