Who is natural guardian of a minor under Section 6 of the Hindu Minority and Guardianship Act?

Section 6 of the Hindu Minority and Guardianship Act, 1956 makes the father, and after him the mother, the natural guardian of a legitimate boy or unmarried girl, but the mother, and after her the father, of an illegitimate child, so the answer is "Mother and father both, as the case may be" and not "Father only, in every case".