ISRO-NASA Joint Mission NISAR to be launched in 2023

Current Context: The ISRO (Indian Space Research Organisation) and the NASA ( National Aeronautics and Space Administration) to launch their joint mission named NISER (NASA-ISRO Synthetic Aperture Radar) satellite.

• The NISER mission will be launched in early 2023.
• The NISER mission aims to measure changes in the earth’s surface globally with the help of advanced radar images.
• The mission is termed a dual-band (L-band and S-band) radar imaging mission. It is based on full polarimetric and interferometric modes of operation.
• It will observe small changes in land, vegetation, and cryosphere.
• Under this mission, L-band SAR and related systems are being developed by NASA and S-band SAR, spacecraft bus, launch vehicle, and related launch services are being developed by ISRO.
• The mission will help to attain scientific objectives like understanding the impact of climate change on Earth's changing ecosystems, land and coastal processes, land deformations and cryosphere.
• Static Part: 
• HQ of NASA: Washington DC, US
• Administrator of NASA: Bill Nelson
• HQ of ISRO: Bengaluru
• Chairman of ISRO: Dr K. Sivan

Question: 

Q.1 When will be ISRO-NASA NISER (NASA-ISRO Synthetic Aperture Radar) satellite mission be launched?
a. 2023
b. 2024
c. 2022
d. 2025