Symptoms: <5 years old with acute, self-limited fever and watery diarrhea. Stool sample: segmented dsRNA. Diagnosis? Histo? a) Norovirus; Apoptotic bodies in the intestinal epithelium b) Rotavirus; Viral inclusion bodies in enterocytes c) Adenovirus; Granulomatous inflammation in the lamina propria d) Enteric adenovirus; Villous atrophy with crypt hyperplasia