Which of the following institutes have been recognised as the Institutes of National Importance (by an Act of Parliament)?
1. Dakshina Bharat Hindi Prachar Sabha, Chennai.
2. National Institute of Pharmaceutical Education and Research, Mohali.
3. Sree Chitra Tirunal Institute for Medical Services and Technology, Thiruvananthapuram.
4. Lakshmibai National Institute of Physical Education, Gwalior.
Select the correct answer using the codes given.