Context: Read the passage. Then answer the question below.

Antarctic krill is a species of swimming crustacean, similar to shrimp, that is about 5 centimeters long. Krill eat the algae that grow on the underside of sea ice in the Southern Ocean around Antarctica.
Pods of humpback whales swim to the Southern Ocean every summer. Humpback whales and other animals, such as emperor penguins and leopard seals, eat Antarctic krill. In fact, Antarctic krill are eaten by almost every animal in Antarctica!
Figure: humpback whales in the Southern Ocean.
Which of the following best describes a community in the Southern Ocean?
A. the algae, the sea ice, and the seawater
B. the Antarctic krill, the emperor penguins, and the leopard seals
C. a pod of humpback whales
From the given choices, pick the correct answer and respond by indicating the letter of the correct option.
Answer: B