In which two ways are the details from the passages "Are Horseshoe Crabs Really Crabs?" and "Delaware's Shorebirds" similar?
A. The blood of both Horseshoe crabs and Delaware's shorebirds is copper-based.
B. Researchers use both Horseshoe crabs and Delaware's shorebirds for testing drugs in laboratories.
C. Both Horseshoe crabs and Delaware's shorebirds serve as a diet to many other animals.
D. The population of the both Horseshoe crabs and Delaware's shorebirds is dwindling.
E. The natural habitats of both Horseshoe crabs and Delaware's shorebirds are threatened