This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lipids, Subject name: Biochemistry
Rothera's test used for detection of: 
Select and explain. 
A. Proteins, B. Glucose, C. Fatty acid, D. Ketones
D: Ketones
Answer: D: Ketones 
Explanation: Ans. D. KetonesTest for Ketone BodiesGerhardts ferric chloride Test--Detect acetoacetateRotheras Nitroprusside test--Detect acetoacetate and acetoneNone of the above tests detect beta hydroxy butyrateName of the testCompound detectedRothera's testKetone bodies, Branched chain ketoacidsHay's testBile saltLiebermann Burchard reactionCholesterolSalkowski's reactionCholesterol