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

Which of the following definitions best describes the instance 'cM1b (lung)'?

A. A pathologic distant metastases stage for lung according to AJCC 7th edition indicating that there is a distant metastases that is histologically confirmed and associated with distant lymph nodes or carcinomatosis.
B. A pathologic distant metastases stage for lung according to AJCC 7th edition indicating that there is a distant metastases that is histologically confirmed.
C. A pathologic distant metastases stage for lung according to AJCC 7th edition indicating that there is a distant metastases based on clinical assessment.
D. A pathologic distant metastases stage for lung according to AJCC 7th edition indicating that there are distant metastases based on clinical assessment.

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