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
Following conditions can themselves cause metabolic acidosis -a) Diarrheab) Diureticc) Ethylened) RTA 
Select and explain. 
A. abc, B. acd, C. bc, D. bde
B: acd
Answer: B: acd 
Explanation: None