A 35-year-old shepherd with chronic right upper quadrant pain presents with vital signs: BP 128/82, HR 88, RR 16, temp 37.2°C, SpO2 98% on room air. Ultrasound demonstrates a large cystic hepatic lesion with multiple daughter cysts and elevated liver enzymes (ALT 65 U/L). He reports close contact with sheep and dogs but denies recent travel outside his region. Abdominal examination reveals mild hepatomegaly without jaundice. Which organism most likely explains these findings?

1. A)Echinococcus granulosusGABARITO
2. B)Giardia lamblia
3. C)Entamoeba histolytica
4. D)Trichinella spiralis
5. E)Diphyllobothrium latum