How should the pages be numbered in a work that is typed or typed on both sides? All pages, starting from the title page, must be counted sequenti...

How should the pages be numbered in a work that is typed or typed on both sides?

All pages, starting from the title page, must be counted sequentially, considering only the front side.
The numbering must appear, starting from the first page of the textual part, in Arabic numerals, in the upper right corner of the page, 2 cm from the top edge, with the last digit 2 cm from the right edge of the page.
In case the work is typed or typed on both sides, the page numbering must be placed on the front side of the page, in the upper right corner; and on the back, in the upper left corner.
In case the work is composed of more than one volume, a single sequence of numbering of the pages must be maintained, from the first to the last volume. If there is an appendix and annex, their pages must be numbered continuously and their pagination must continue from the main text.
a) Only statements I and II are correct.
b) Only statements III and IV are correct.
c) All statements are correct.
d) All statements are incorrect.