What is the best>?

[IMG SURVIVOR]

He was in good health until 6 weeks ago when he developed intermittent watery diarrhea, occurring six times per day, with frequent nocturnal episodes. He has abdominal cramping. His symptoms improve with fasting. He does not have fevers, chills, night sweats, nausea, vomiting, or arthralgias, but has recently lost 2.7 kg (6 Ib). He has had no recent travel or sick contacts.
Physical examination shows a papulovesicular eruption on the lower back and left elbow. Abdomen is soft, but there is no organomegaly. Stool is light brown and negative for occult blood.
Which of the following tests would establish the diagnosis?
A. Examination for ova and parasites
B. HIV test
C. Flexible sigmoidoscopy
D. 24 Hour fecal fat collection
E. Small-bowel biopsy

[Dr. X]

i'll guess E.. for celiac.

[vishalforyou]

HIV test i think so..