The 'Housing for All' scheme faces the following key constraints: Which are correctly matched?
1. Lack of access to finance from formal financial institutions.
2. Long-drawn out, multi-level approval system in urban areas in a large majority of municipal jurisdictions.
3. For several categories of houses or those in particular locations, these delays are common even where a single window system has reportedly been introduced
4. Limited private sector participation in affordable housing schemes in urban areas.

A. 1, 2, 3 and 4

B. 1, 2, 3

C. 2 and 4

D. Only 2

Answer: Option A