This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Large intestine, Subject name: Surgery
In colorectal cancer, tumor deposits in subserosa without regional lymph node metastasis. According to 8th AJCC, stage the tumor: 
Select and explain. 
A. T4b, B. N2b, C. N1c, D. M1c
C: N1c
Answer: C: N1c 
Explanation: According to 8th AJCC, tumor deposits in subserosa without regional lymph node metastasis is stage N1c