In Mammals, the Specific Membrane Resistance Is

In mammals, the specific membrane resistance is

A) smaller than in squids, where the intracellular ion concentration is lower.
B) smaller than in frogs, where the intracellular ion concentration is lower.
C) similar to that of other non-mammalian species including squids and frogs.
D) comparable to that of copper.
E) much smaller than copper, making the conduction of electrical signals particularly efficient.