of a child is ascertained by adopting the first available basis out of a number of options postulated in Rule 12(3). If, in the scheme of options under Rule 12(3), an option is expressed in a preceding clause, it has overriding effect over an option expressed in a subsequent clause. The highest rated option available would conclusively determine the age of a minor. In the scheme of Rule 12(3), matriculation (or equivalent) certificate of the child concerned is the highest rated option. In case, the said certificate is available, no other evidence can be relied upon. Only in the absence of the said certificate, Rule 12(3) envisages consideration of the date of birth entered in the school first attended by the child. In case such an entry of date of birth is available, the date of birth depicted therein is liable to be treated as final and conclusive, and no other material is to be relied upon. Only in the absence of such entry, Rule 12(3) postulates reliance on a birth certificate issued by a corporation or a municipal authority or a panchayat. Yet again, if such a certificate is available, then no other material whatsoever is to be taken into consideration for determining the age of the child concerned, as the said certificate would conclusively determine the age of the child. It is only in the absence of any of the aforesaid, that Rule 12(3) postulates the determination of age of the child concerned, on the basis of medical opinion. " (Emphasis Supplied)
