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: ENT
NOT Ototoxic: 
Select and explain. 
A. Streptomycin, B. Isotretinoin, C. Vincristin, D. Gentamycin
C: Vincristin
Answer: C: Vincristin 
Explanation: None