Indian Polity · Polity

Consider the following statements regarding Vande Mataram, National Symbols, and the constitutional framework in India: I. The Constitution of India expressly mentions Vande Mataram as the National Song. II. The Prevention of Insults to National Honour Act, 1971 provides statutory protection to the National Anthem and the National Flag, but does not explicitly mention Vande Mataram. III. Fundamental Duties under Article 51A impose moral obligations and are not directly enforceable by courts without enabling legislation. IV. The Supreme Court in Bijoe Emmanuel v. State of Kerala (1986) held that standing respectfully in silence during the National Anthem does not constitute disrespect or violate the law. How many of the above statements are correct?