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: Medicine
TTKG in hypokalemia is - 
Select and explain. 
A. < 3-4, B. > 6-7, C. > 9-10, D. > 10-15
A: < 3-4
Answer: A: < 3-4 
Explanation: Answer- A. < 3-4A normal TTK in normal subjects on normal diet is 8-9Without other disease, hypokalemia should produce a TTKG <3