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: Biochemistry
In which of the following conditions the level of creatinine kinase 1 increases 
Select and explain. 
A. Myocardial ischemia, B. Brain Ischemia, C. Kidney damage, D. Electrical cardioversion
B: Brain Ischemia
Answer: B: Brain Ischemia 
Explanation: None