Who among the following rulers paid attention to the water resource management in Girnar region some centuries before the Christian era ? 1. Mahapadma Nanda 2. Chandragupta Maurya 3. Ashoka 4. Rudradaman Select the correct answer from the code given below—

• A. 1, 2
• B. 2, 3
• C. 3, 4
• D. 2, 3, 4