Consider an axon of a neuron. At time=t1, its voltage is at threshold for an action potential; at time=t2, its voltage is at 0 millivolts prior to the peak of that action potential. In the time period between t1 and t2 of that single action potential,

A. the amount of intracellular sodium decreases.

B. sodium conductance of the voltage-gated sodium channels increases as membrane voltage increases.

C. sodium conductance of the voltage-gated sodium channels changes with a faster time course than potassium conductance of the voltage-gated potassium