According to Article 51A of the Constitution which among the following are correct? 1. It shall be the duty of every state to protect monuments of national importance. 2. It shall be the duty of every citizen of India to uphold and protect the sovereignty, unity and integrity of India. 3. The state shall take steps to protect and improve the environment and to safeguard the forest and wild life of the country. 4. It shall be the duty of every citizen of India to develop the scientific temper, humanism and the spirit of inquiry and reform. Choose your answer from the following options:

Answer: Option B