Which of the Following Is True with Respect to Oligotrophic

Which of the following is True with respect to oligotrophic lakes and eutrophic lakes?

A) Oligotrophic lakes are more subject to oxygen depletion.
B) Rates of photosynthesis are lower in eutrophic lakes.
C) Eutrophic lake water contains lower concentrations of nutrients.
D) Eutrophic lakes are richer in nutrients.
E) Sediments in oligotrophic lakes contain larger amounts of decomposable organic matter.