California Condors, Large, Predatory Birds That Were Previously on the Edge

Multiple Choice

California condors, large, predatory birds that were previously on the edge of extinction, have benefited from a program that raises birds in captivity and then releases them into the wild. The reintroduction program, however, is having variable success.
-Which finding could best explain how condor reproduction along the coast is being harmed by DDT in the condors' foods now, even though DDT was banned in 1972?

A) Condors may be feeding on animals that contain DDT.
B) Eggshells are made of a material that accumulates tiny amounts of DDT from the environment.
C) Condors are very large and long-lived animals so their bodies cannot properly digest and eliminate pesticides in seawater.