A previously healthy 6-month-old boy presents with upper body weakness. He cannot hold his eyes open, pupils do not react, and he cannot hold his head up. What is the proper treatment?

A) Send him home on amoxicillin and clindamycin (to stop the toxin production quickly)
B)Give him a dose of equine anti-botulinum immunoglobulin
C)Offer monitored supportive care with antibiotics and human anti-botulinum immunoglobulin
D)Offer monitored supportive care with human anti-botulinum immunoglobulin
E)Offer monitored supportive care with no antibiotics and no antitoxin