The humpback whale is a large marine mammal that lives widespread throughout the North Pacific Ocean. Barnacles are small marine crustaceans that will attach themselves to the bodies of humpback whales. Though the barnacles grow on the skin of whales to filter feed, they are too small to harm the whale. This example best defines which of the following? A. commensalism
B. mutualism
C. parasitism
D. predation

Please help