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: Dental
Corrosion of stainless steel is due to formulation of: 
Select and explain. 
A. Chromium carbide, B. Carbon carbide, C. Iron carbide, D. Nickel carbide
A: Chromium carbide
Answer: A: Chromium carbide 
Explanation: None