Membranes with Unsaturated Fatty Acids in Their Components Are More

Membranes with unsaturated fatty acids in their components are more flexible and fluid because:

A) Unsaturated fatty acids pack closely together to form ordered arrays.
B) Unsaturated fatty acids bend at the double bond preventing close packing.
C) Saturated fatty acids have a "kink" that produces more fluid aggregates.
D) Unsaturated fatty acids have cis double bonds that prevent formation of the "kink."
E) All of the above are correct.