With reference to the Chola empire, which among the following statements is / are correct?
1. The Administration under Cholas was highly decentralized
2. Cholas are known for taking up huge irrigation and road projects in their territories
3. The replacement of brick by stone structures went on steadily under the Cholas
Choose the correct option from the codes given below:

Answer: [D] 1, 2 & 3

This question is a part of GKToday's Integrated IAS General Studies Module