; and (ii) a description of the process by which the individual may decline a change of address for voter registration purposes. (c) Automatic Registration of Eligible Individuals; automatic change of address (1) Registration Upon the expiration of the 21-calendar-day period which begins on the date the appropriate State election official issues a notification to an individual under subsection (b)(2)(A), the official shall ensure that the individual is registered to vote in elections for Federal office held in the State unless— (A) the official later determines that the individual does not meet the eligibility requirements for registering to vote in such elections; or (B) prior to the expiration of such 21-calendar-day period, the individual notifies the official that the individual declines to be registered to vote in such elections. (2) Change of address Upon the expiration of the 21-calendar-day period which begins on the date the appropriate State election official issues a notification to an individual under subsection (b)(2)(B), the official shall ensure that the individual is registered to vote in elections for Federal office at the address provided in the identifying information unless— (A) the official later determines that the individual does not meet the eligibility requirements for registering to vote in such elections