The correct option is D 1,2 and 3
The idea behind land pooling is to aggregate small land pieces into a large parcel, develop necessary infrastructure such as water supply, sewage system and drainage, make provision for larger social and other infrastructure, including metros and main roads, and return the developed land to owners or developers.Hence, it is a concept where small chunks of land are owned by a group of owners who assemble for the development of infrastructure.
After the development of the land, the Land Pooling agency redistributes the land after deducting some portion as compensation towards infrastructure costs.