Which of the following statement/statements is/are valid regarding the National Infrastructure Pipeline (NIP) ?

1. INIP includes only economic infrastructure projects but not social infrastructure projects.
2. IINIP is aimed to focus on key greenfield projects alone. Brownfield projects are excluded from the NIP's coverage.
3. IIINIP aims to offer investment opportunities in India's infrastructure sector, and to attract investments into India.
4. IVIndia Investment Grid (IIG) as a platform has ceased to facilitate the NIP and instead 'Invest India' is presently facilitating NIP.

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