Consider the following statements regarding the Indus Valley Civilization (IVC) in Punjab:
1. The IVC sites in Punjab include Harappa, Sanghol, and Ropar.
2. The Indus Valley people used burnt bricks in a standard ratio of 1 ∶ 2 ∶ 4 for construction.
3. Rakhigarhi in Haryana is considered the largest Indus Valley Civilization site in the subcontinent.
4. The Indus script has been deciphered and proven to be related to Sanskrit.
Which of the above statements are correct?
1
Only 1 and 2
2
Only 1, 2, and 3
3
Only 3 and 4
4
1, 2, 3, and 4