The termite gut protist,Mixotricha paradoxa,has at least two kinds of bacteria attached to its outer surface.One kind is a spirochete that propels its host through the termite gut.A second type of bacteria synthesizes ATP,some of which is used by the spirochetes.The locomotion provided by the spirochetes introduces the ATP-producing bacteria to new food sources.Which term(s)is (are)applicable to the relationship between the two kinds of bacteria? 1)mutualism 2)parasitism 3)symbiosis 4)metabolic cooperation
A)1 only B)1 and 2 C)2 and 3 D)1, 3, and 4 E)2, 3, and 4