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
Cobalt-Chromium alloys contains: 
Select and explain. 
A. 30% cobalt and 60% chromium, B. 60% cobalt and 30% chromium, C. 1% palladium, D. 20% gold
B: 60% cobalt and 30% chromium
Answer: B: 60% cobalt and 30% chromium 
Explanation: None