Which of the following choices correctly fills in the blanks? 

After repolarization, the sodium ions are found _____A_______ the neuron and the potassium ions are found ______B_____ of the neuron. This reversal of ions can be fixed by the action of ____________C______________. ____D____ sodium ions are taken out and ___E____ potassium ions are brought in.

Select one:

a. A  B  C  D  E outside  inside  Na⁺/K⁺ exchange pump two    three

b. A  B  C  D  E inside  outside   voltage gated channels  three two

c. A  B  C  D  E outside  inside    voltage gated channels  two    three

d. A  B  C  D  E inside  outside   Na⁺/K⁺ exchange pump  three two