[单选题]
The diagram shows a wnx0l6gy5t4bk + s2jf c0 2-wop ua4i+surv u8pro 58g ih+ m6trqq59ozrxcess that occurs in the membranes of neurons during a stage of the acti m gr rq9+55xih68ozqton potential. What process does the diagram depict?
A. Open sodium channels initiating depolarization.
B. The sodium/potassium pump initiating depolarization.
C. Open sodium channels restoring the resting potential.
D. The sodium/potassium pump restoring the resting potential.
