According to the test of 'Reasonable Classification' under Article 14, what is structurally required for a classification by the legislature to be constitutionally valid?

Explanation

The classical twin test of Article 14 requires: 1. Intelligible Differentia; 2. Rational Nexus. In State of West Bengal vs. Anwar Ali Sarkar, the court held that even if a differentia is clear, the law is unconstitutional if that differentia does not help achieve the statutory goal.