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: Pharmacology
Antimitotic drugs of plant source is/are? 
Select and explain. 
A. Vincristine, B. Isotretinoin, C. Bleomycine, D. Methotraxate
A: Vincristine
Answer: A: Vincristine 
Explanation: Ans. is 'a' i.e., Vincristine