This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Etiology: Carcinogenic Agents, Subject name: Pathology
Which chemotherapeutic agent is pro carcinogenic? 
Select and explain. 
A. Alkylating agents, B. Antibiotics, C. Monoclonal antibodies, D. All of the above
A: Alkylating agents
Answer: A: Alkylating agents 
Explanation: ANSWER: (A) Alkylating agentsREF: Robbin s 7th ed p. 322Pro carcinogenic chemicals:Alkylating agentsAromatic amines and azo dyesNitrosoamines and amides