Which Statement Is a Correct Comparison of Predators and Parasites

Which statement is a correct comparison of predators and parasites?

A) Both predators and parasites kill their prey or host.
B) Both predators and parasites often cause disease.
C) Both predators and parasites carry out positive interactions.
D) Predators usually specialize in one type of prey, while parasites usually have a variety of hosts.
E) Predators are usually larger than their prey, while parasites are usually smaller than their hosts.