Jamal investigates several interactions among organisms in a woodland ecosystem. He observes that coyotes hunt and kill white-tailed deer. He learns that lungworms live in the lungs of the deer, making it difficult for the deer to breathe. He also learns that larvae of nasal bot flies live in the nasal passages of the deer and cause them minor harm. Which sentence describes the lungworms and fly larvae?

A. They are both hosts.
B. They are both predators.
C. They have different niches in the same habitat.
D. They compete for the same resources in a shared niche.