以下是docker监控工具的是（）。 A: cadvisor B: heapster C: elk日志分析系统 D: junit

Which of the following are ecological benefits of reintroducing wolves to Yellowstone National Park? A: growth of aspen and cottonwood trees near stream banks, due to fewer elk gathering near streams B: decrease in coyote population, which in turn has increased food sources for birds of prey C: an increase in water temperature of streams within the park, decreasing the number of trout D: A and B only E: All of the above