In Africa, as the crocodile lies with its mouth open, the plover, or crocodile bird, flies into its mouth and feeds on bits of meat stuck in the crocodile’s teeth. The crocodile does not harm the plover. The plover gets a meal and the crocodile gets his teeth cleaned. Describe the dynamics of this relationship.

A) It is a mutualistic relationship because both animals benefit; neither animal is harmed.
B) It is a symbiotic relationship because the plover benefits from the meat in the crocodile's teeth..
C) The crocodile is a predator. The plover is a parasite. There are two relationships illustrated by this dynamic.
D) It is an example of commensalism because the plover benefits from the relationship while the crocodile is neither helped or harmed.