Consider the following statements about Uttar Pradesh :

1. Literacy percentage as per 2001 census is 56.3.

2. The density of population is 690 per square km.

3. The most populous district is Kanpur Nagar.

4. The largest population of the scheduled castes is in district Sitapur.

Select the correct answer from the codes given below :

Codes :

U.P.P.C.S. (Pre) 2006