Using a Micropipette,a Neuroscientist Injects an Axon with Enough Na⁺

Multiple Choice

Using a micropipette,a neuroscientist injects an axon with enough Na⁺ ions to move the membrane potential +25mV (from resting) .What happens next?

A) The membrane potential will be at the Na⁺ equilibrium potential.
B) Voltage-gated Na⁺ will be triggered to open.
C) The neuron membrane will be hyperpolarized.
D) Na⁺ channels will all be inactivated.
E) None of the answer choices are correct.