A laboratory in one of the U.S. Trust territories in the Pacific Islands reported Entamoeba histolytica amebiasis in the stool specimens of patients with bloody diarrhea.  The laboratory made their diagnosis from unstained wet mounts.  What should be the next course of action?

(a) Recommend treating the patients for E. histolytica infection
(b) Send a team to the island to investigate the outbreak of amebiasis
(c) Recommend confirmation of E. histolytica amebiasis by a reference laboratory
(d) Obtain water and environmental samples to examine for E. histolytica