This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
Type of wave in Metabolic Encephalopathy- 
Select and explain. 
A. Alpha, B. Beta, C. Gamma, D. Delta
D: Delta
Answer: D: Delta 
Explanation: Harrison's principles of internal medicine 17th edition. *The type of EEG in metabolic encephalopathy typically reveals generalized slowing.(Delta waves -slower than 4/s).