Distal intestinal obstruction in bullock is diagnosed by

Answer: Option C

Distal intestinal obstruction in bullock is diagnosed by per rectal examination.
Distal intestinal obstruction syndrome (DIOS) involves obstruction of the distal part of the small intestines by thickened intestinal content and occurs in about 20% of mainly adult individuals with cystic fibrosis.
A complete history and physical examination can be suggestive, especially if a palpable mass in the right lower quadrant of the abdomen is present. Ultrasound and computed tomography (CT) imaging of the abdomen can confirm the diagnosis by demonstrating dilated loops of intestine with material in the intestinal lumen with bubbles.