The Fluidity of Biological Membranes Depends on Temperature and Lipid

The fluidity of biological membranes depends on temperature and lipid composition.Because membrane fluidity has to be maintained in an optimal range, you can expect that, in comparison with tropical fish, the biological membranes of cold-water fish have:

A) A higher proportion of polyunsaturated fatty acids.
B) A higher sphingomyelin/lecithin ratio.
C) A higher cholesterol content.
D) A higher content of saturated fatty acids.
E) A higher glycolipid content.