The stoichiometry of the Na ,K- AT Pase is

A) 3 Na⁺ ions are pumped into the cell with 2 K⁺ ions being pumped out
B) 3 Na⁺ ions move in and 1 Ca²⁺ ion moves out
C) 1 Na+ ion m ov es ou t with eve y K⁺ ion tha t moves in
D) 3 Na⁺ ions are pumped out of the cell with 2 K⁺ ion s be ing pu m pe d in
E) 3 Na⁺ ions are pumped out of the cell with each K⁺ ion being
pumped in