; and (B) the individual had become entitled to an old-age insurance benefit under section 202 beginning with such month. For the purposes of the preceding sentence, the elapsed years referred to in section 215(b)(2)(B)(iii) shall not include the year in which the individual's benefit period begins, or any year thereafter. (c) Payment of benefit (1) Selection of number of benefit months In filing an application for a parental leave benefit under this section, an individual shall select the number of months (not to exceed 3) for which the individual will receive a monthly payment under such parental leave benefit (in this section referred to as benefit months ). (2) Election of benefit months Not later than 14 days before the start of any month in the benefit period of an individual entitled to a parental leave benefit, the individual may elect to treat such month as a benefit month. The number of months in such benefit period treated as benefit months shall equal the number selected in the individual’s benefit application, and the Commissioner may designate any month as a benefit month in any case in which an individual does not elect to treat a sufficient number of months as benefit months before the end of the benefit period. (3) Amount of monthly payment The amount of a monthly payment made in any benefit month within a benefit period to an individual entitled to a parental leave benefit shall be an amount equal to— (A) the amount of the parental leave benefit determined for the individual under subsection (b)