Customs are an important source of Hindu Law. Which one of the following is not a necessary feature of…

Section 3(a) of the Hindu Marriage Act (and of the Hindu Adoptions and Maintenance Act) requires a custom or usage to have been continuously and uniformly observed for a long time, to be certain and not unreasonable, and not to be opposed to public policy. Uniformity, certainty and conformity with public policy are therefore all necessary features, so "None of the given options is correct".