스크립트에 "So organisms and animals must adapt by either eating the archaea or..by allowing the archaea to live in their bodies so that it can produce food for them"이라는 문장이 must라는 단어와 함께 명시되어 있음에도 (C)가 답이 될 수 없는 이유가 궁금합니다.

10.What does the professor imply about the symboitic relationship between the archaea and other organisms?

(A)The archaea and other organisms need each other in order to survive.

(B)The archaea survive better in the bodies of other organisms.

(C)Other organisms must initiate a relationship with the archaea.

(D)The archaea do not need other organisms in order to live.