Which of the Following Descriptions of Water Pollution Best Represents

Which of the following descriptions of water pollution best represents chemical pollution?

A) soil and suspended matter that blocks sunlight and interferes with photosynthesis
B) excess heat, typically generated by industrial cooling, that depletes oxygen
C) release of undesirable compounds that negatively affect organisms
D) sudden growth of simple plants that ultimately leads to depletion of dissolved oxygen
E) None of the above