A 45-year-old man was admitted to an Ohio emergency room for headache, fever, general muscle aches, and weakness.  In addition to these “flu-like symptoms,” laboratory work-up on a blood specimen revealed significantly elevated eosinophilia.  The patient's history included a camping and hunting trip the month before in Ontario, Canada.  In the weeks before onset of symptoms, he ate several meals that included bear meat.  Which is the most likely causative agent of this infection?

(a) Taenia solium
(b) Taenia saginata
(c) Diphyllobothrium latum
(d) Trichinella spiralis