Ticks carry bacteria that cause Lyme disease. Ticks do not get Lyme disease, but they can transfer the bacteria to humans, who can get the disease. Which of the following statements best describes the relationships among the bacteria, the ticks, and the humans?
A. The relationship between the bacteria and the ticks is competition, and the relationship between the ticks and the humans is predation.
B. The relationship between the bacteria and the ticks is competition, and the relationship between the ticks and the humans is parasitism.
C. The relationship between the bacteria and the ticks is commensalism, and the relationship between the ticks and the humans is parasitism.
D. The relationship between the bacteria and the ticks is commensalism, and the relationship between the ticks and the humans is predation.