An apex predator is an animal in an ecosystem that has no natural predators. Which of the following statements would be true involving these predators?

A. They are usually at the base of the ecological pyramid and are many in number.
B. They are usually at the top of the ecological pyramid and are many in number.
C. They are usually at the base of the ecological pyramid and are few in number.
D. They are usually at the top of the ecological pyramid and are few in number.