A Team of Environmental Scientists Conducted a Water Quality Study

Multiple Choice

A team of environmental scientists conducted a water quality study on a river. They studied the dissolved oxygen and pH of the water. They also examined how these factors may affect fish in the pond. The dissolved oxygen levels found were 2.0 ppm and the pH was 5.0. According to this study and the charts below, what is the best conclusion that can be made based on the information given and fish survival?
(Source: http://www.water-research.net/Watershed/dissolvedoxygen.htm)
(Source: http://www.epa.gov/acidrain/effects/surface_water.html)

A) No fish can survive at the dissolved oxygen or pH levels found in this study.
B) Trout and bass can live in the water based on the dissolved oxygen and pH levels found in this study.
C) The dissolved oxygen is high enough for fish but the pH levels are too low.
D) The pH levels could support trout and perch, but not bass; however, the dissolved oxygen levels are too low to support fish.
E) The dissolved oxygen and pH levels are good enough for all aquatic organisms to survive.