The Plasma Membrane of a Neuron Is More Permeable to K⁺

Multiple Choice

The plasma membrane of a neuron is more permeable to K⁺ because

A) of its positive electrical charge.
B) there are more leak ion channels for K⁺ than Na⁺.
C) protein molecules cannot exit through the plasma membrane.
D) Ca²⁺ block Na⁺ and Cl⁻ channels.
E) there are more leak ion channels for Na⁺ than K⁺.