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: Microbiology
Abdominal pain, fat malabsorption & frothy stools suggests -a) Amoebiasisb) Bacillary dysentryc) Giardiasisd) Pancreatic enzyme deficiency 
Select and explain. 
A. ab, B. bc, C. cd, D. ac
C: cd
Answer: C: cd 
Explanation: None