If an official ballot consisting of one or more individual ballot cards upon which the names of candidates and measures are printed is used for vote by mail voting, the two stubs specified in Section 13261 may be eliminated from the ballot cards by printing a group style number on each card and by printing the information required by subparagraphs (C), (D), (E), (F), and (G) of paragraph (2) of subdivision (b) of Section 13261 on a separate form accompanying the official ballot. If the two stubs are not eliminated, the language required by subparagraph (B) of paragraph (2) of subdivision (b) of Section 13261 to be printed on the second stub may be omitted.