Use the information to answer the following question. People can swallow the eggs of tapeworms by consuming unclean food or water. Tapeworms can live in the digestive systems of humans where they grow and feed off the food the person eats. As a result, the person does not receive proper nourishment and becomes ill.

Which of the following explanations BEST describes the relationship that exists between the humans and the tapeworms?

A. Parasitism, because the tapeworms are getting food, but the humans don’t know the tapeworms are there.

B. Commensalism, because the tapeworms are getting food, but the human is losing nutrients in the process.

C. Parasitism, because the tapeworms are getting food, but the human is losing nutrients in the process.

D. Commensalism, because the tapeworms are getting food, but the humans don’t know the tapeworms are there.