Dr. Lange discovers a colony of bacteria living in an extremely acidic environment. While observing the colony, she finds that the bacteria are autotrophs.

Which best describes the bacteria discovered by the scientist?

They are probably archaebacteria because they are autotrophs.
They are probably eubacteria because they are autotrophs.
They are probably eubacteria because the colony lives in an extreme environment.
They are probably archaebacteria because the colony lives in an extreme environment.