Which of the following are the objectives of Rastriya Uchchatar Shiksha Abhiyan (RUSA)? 
1) To improve the overall quality of state institutions. 
2) To ensure adequate availability of quality faculty. 
3) To create new institutions through upgradation of existing autonomous colleges. 
4) To downgrade universities with poor infrastructure into autonomous colleges. 
Select the correct answer from the codes given below: