Termites feed on dead wood and rely on protozoans in their guts to digest the cellulose in the wood. The protozoans depend on the cellulose in the termite gut for food. Which statement best explains the relationship between termites and protozoans in their guts?
A.
Termites and the protozoans in their guts are in a relationship called commensalism because the termites benefit and the protozoans are unaffected.
B.
Termites and the protozoans in their guts are in a relationship called competition because they both need cellulose.
C.
Termites and the protozoans in their guts are in a relationship called parasitism because the protozoans live inside of the termites as hosts.
D.
Termites and the protozoans in their guts are in a relationship called mutualism because they benefit each other by providing and obtaining nutrition.