With reference to Indian satellites and their launchers, consider the following statements: 1. All the INSAT-series of satellites were launched abroad 2. PSLVs were used to launch IRS-series of satellites 3. India used the indigenously built cryogenic engines for the first time for powering the third stage of GSLV 4. GSAT, launched in the year 2001, has payloads to demonstrate digital broadcasts and internet services Which of these statements are correct?

- Statement 1 is incorrect: While many early INSAT satellites were launched abroad (e.g., by Arianespace), later INSAT/GSAT series satellites were also launched by India's GSLV. Therefore, not all INSAT-series satellites were launched abroad. - Statement 2 is correct: PSLVs (Polar Satellite Launch Vehicles) are indeed primarily used by ISRO to launch polar-orbiting satellites, including the IRS (Indian Remote Sensing) series satellites. - Statement 3 is correct: India successfully used an indigenously built cryogenic engine for the first time in the third stage of GSLV-D5 on January 5, 2014, carrying GSAT-14. - Statement 4 is correct: GSAT-1, launched in 2001, was an experimental satellite intended to demonstrate digital broadcast and internet services payloads.