Increase in the Population of Photosynthetic Bacteria Using the Oxygen-Releasing

Multiple Choice

Increase in the population of photosynthetic bacteria using the oxygen-releasing pathway led to an increase in the oxygen levels in the seas and air. What was (were) the major consequence(s) of that change?
I. aerobic respiration became the major mode of life
II. all anaerobic organisms went extinct
III. formation of ozone layer

A) I only
B) II only
C) I and II
D) I and III
E) I, II, and III