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

Which of the following definitions best describes the instance 'cM0 (ovary)'?

A. A pathologic distant metastases stage for ovary according to AJCC 7th edition indicating that there is distant metastasis except peritoneal metastasis based on clinical assessment.
B. A pathologic distant metastases stage for ovary according to AJCC 7th edition indicating that there is distant metastasis except peritoneal metastasis that is histologically confirmed.
C. A pathologic distant metastases stage for ovary according to AJCC 7th edition indicating that there is no distant metastasis.
D. A unit of molarity which is equal to one millionth of a molar or 10^[-6] M.

Answer: A pathologic distant metastases stage for ovary according to AJCC 7th edition indicating that there is no distant metastasis.