Which of the following National Parks of India are declared as World Heritage by UNESCO? 1. Keoladeo National Park 2. Sundarbans National Park 3. Kaziranga National Park 4. Ranthambore National Park Select the correct answer using the code given below.

• 1 and 2 only
• 1, 2 and 3 only
• 3 and 4 only
• 1, 2, 3 and 4