The image below shows electrolysis of an electrolyte using a DC voltage source.

Based on this, Which of the following statements is/are correct?
(i) The solution remains electrically neutral during electrolysis.
(ii) Electrons flow from the current source towards the solution at one electrode, and an equal number of electrons flow away from the solution at the other electrode.
(iii) The number of positive ions moving towards one electrode is always equal to the number of negative ions moving towards the other electrode.

Options

A. i only
B. i and ii only
C. ii and iii only
D. all- i, ii, and iii