Which among the following statements about the power to change the basic structure of the Constitution of India is/are correct?
1. It falls outside the scope of the amending powers of the Parliament.
2. It can be exercised by the people though representatives in a Constituent Assembly.
3. It falls within the constituent powers of the Parliament.
Select the correct answer using the code given below.

A. 1 and 3
B. 1 and 2
C. 1 only
D. 2 and 3