This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pediatrics
Sweaty feet odor is seen in 
Select and explain. 
A. Maple syrup urine disease, B. Gauchers disease, C. Isovaleric acidemia, D. Phenylketonuria
C: Isovaleric acidemia
Answer: C: Isovaleric acidemia 
Explanation: Sweaty feat odor - Isovaleric AcidemiaSmoky sweat - MSUDMousy or Musty - PhenylketonuriaBoiled cabbage - TyrosinemiaIn alkaptonuria - urine becomes darkish brown when exposed to air while purplish brown in porphyria(Refer: Nelson's Textbook of Pediatrics, SAE, 1st edition, pg no. 651)