The Resting Membrane Potential of a Neuron Comes About Because

The resting membrane potential of a neuron comes about because ______.

A) neuronal membranes are unusually impermeable compared to the membranes of other cell types
B) of the unequal distribution of ions between the outside and inside of the neuron
C) the concentration of ions within the brain is different to other tissues
D) the neuronal membranes contain ion transporters which are more active than in other cell types