Which of the following is true with regard to the Government e-Marketplace (GeM)?

1) Procurement through the GeM portal is mandatory for all states, centres, and other government agencies.

2) The National Informatics Center (NIC) and the Union Ministry of Finance are working together to build it.

3) For the purpose of selling bamboo goods, the National Bamboo Mission and GeM have established a special window on the GeM portal.

4) It is mandatory for sellers to enter the country of rigin while registering new products on GeM.