Abdominal pain, fat malabsorption & frothy stools suggests -
Amoebiasis
Bacillary dysentry
Giardiasis
All
Ans. is 'c' i.e., Giardiasis . Abdominal pain, fat malabsorption and frothy stool can occur both in giardiasis and pancreatic enzyme deficiency (chronic pancreatitis). Amoebiasis and bacillary dysentry do not cause malabsorption.