To overcome long-term osmotic challenges caused by osmotic changes in the external environment, osmoconformers

A) raise their cellular content of sodium, potassium and chloride ions.
B) lower the level of sodium, potassium and chloride ions in the ICF.
C) raise the osmotic pressure of ICF by raising the level of organic osmolytes.
D) raise intracellular ion content and ICF osmotic pressure.
E) lower ICF ion content and osmotic pressure.