B

Alveolar (multilocular) hydatid disease presents as a slow-growing, infiltrative, tumor-like mass in the liver and is produced by the larval stage of Echinococcus multilocularis, not by E. granulosus, cysticercus, or amoebae [Farrokh, 2015, PMID 25773697; Mosimann, 1980, PMID 7406556].