Put the steps of the sodium-potassium pump in the correct order.
1) potassium binds to protein pump
2) sodium binds to protein
3) potassium released into ICF
4) hydrolysis of ATP
5) sodium expelled
A) 1, 2, 3, 4, 5
B) 2, 4, 5, 1, 3
C) 3, 4, 2, 5, 1
D) 5, 3, 4, 2, 1
E) 3, 2, 4, 1, 5