(ii) Multiple corporations. If more than one corporation would, without the application of this paragraph (c)(2), be a component member of more than one controlled group, those corporations electing to be component members of the same group must file a single statement. The statement must contain the information described in paragraph (c)(2)(i) of this section, plus the names and employer identification numbers of all other corporations designating the same group. The original statement must be included on or with the original Federal income tax return (including any amended return filed on or before the due date (including extensions) of such return) of the corporation that, among those corporations which would (without the application of this paragraph (c)(2)) belong to more than one group, has the taxable year including such December 31st which ends on the earliest date. That corporation must provide a copy of the statement to each other corporation included in the statement and represent in its statement that it has done so. Either the original or a copy of the statement must be retained by each corporation as part of its records. See 1.6001-1(e) of this chapter.