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
Highly Cardiotoxic is: 
Select and explain. 
A. Bleomycin, B. Doxorubicin, C. MTX, D. Mitomycin
B: Doxorubicin
Answer: B: Doxorubicin 
Explanation: Doxorubicin