This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Disticntion between a poorly differentiated carcinoma and a lymphoma can be made by immunoperoxidase staining of the tumour tissue with antibodies directed against - 
Select and explain. 
A. Desmin, B. Myoglobin, C. Vimentin, D. Cytokeratin
D: Cytokeratin
Answer: D: Cytokeratin 
Explanation: None