A Report into the Water Venues of the 2016 Rio

A report into the water venues of the 2016 Rio Olympic Games revealed that:

A) Most of the water venues were safe, but some contained high levels of pollutants
B) Only some people who swam in the water venues were at risk to illnesses including diarrhea, vomiting, and respiratory trouble
C) Every single Olympic water venue was considered unsafe
D) The media hyperbole around polluted water was exaggerated