Which of the following statements regarding the Preamble of the Constitution of India is/are correct? 1. The Preamble is an integral part of the Constitution. 2. The words 'secular' and 'socialist' have been a part of the Preamble since its inception. Select the correct answer using the code given below :

• Correct answer
  A

  $1$ only
• B

  $2$ only
• C

  Both $1$ and $2$
• D

  Neither $1$ nor $2$

Hence, the correct answer is option: 'A'.