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
Increased anion gap acidosis is seen in -a) DKAb) RTA c) ARFd) Organic aciduriae) Diarrhoea 
Select and explain. 
A. acd, B. bde, C. cde, D. ade
A: acd
Answer: A: acd 
Explanation: None