question: Q:A 13-year-old boy is brought to the pediatrician by his parents who are concerned about his short stature. He also has had recurrent episodes of diarrhea. Past medical history is significant for iron deficiency anemia diagnosed 6 months ago. Physical examination is unremarkable except that he is in the 9th percentile for height. Serum anti-tissue transglutaminase (anti-tTG) antibodies are positive. An upper endoscopy along with small bowel luminal biopsy is performed. Which of the following histopathologic changes would most likely be present in the mucosa of the duodenal biopsy in this patient?? 
  {'A': 'Neutrophilic infiltration', 'B': 'Blunting of the intestinal villi', 'C': 'Granulomas extending through the layers of the intestinal wall', 'D': 'Crypt aplasia', 'E': 'Cuboidal appearance of basal epithelial cells'},