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

Which of the following definitions best describes the instance 'cM1 (kidney)'?

A. A pathologic distant metastases stage for kidney according to AJCC 7th edition indicating that there is no distant metastasis.
B. A pathologic primary tumor stage for colon and rectum according to AJCC 7th edition indicating carcinoma in situ (intraepithelial or invasion of lamina propria).
C. A pathologic distant metastases stage for kidney according to AJCC 7th edition indicating that there are distant metastases based on clinical assessment.
D. A pathologic distant metastases stage for kidney according to AJCC 7th edition indicating that there is a distant metastases that is histologically confirmed.

Answer: A pathologic distant metastases stage for kidney according to AJCC 7th edition indicating that there are distant metastases based on clinical assessment.