Explanation:

Both statements are incorrect.

• Project 17 Alpha frigates (P-17A) were launched by the Indian Navy in 2019 to construct a series of stealth guided-missile frigates.

• These are currently being constructed by two companies - Mazagon Dock Shipbuilders (MDL) and Garden Reach Shipbuilders & Engineers (GRSE).

• These guided-missile frigates have been constructed with a specific stealth design, which has radar-absorbent coatings and is low-observable which can make its approach undetectable for the enemies.

• The new technology also reduces the infrared signals of the ship.

• The first stealth ship launched under Project 17A was the Nilgiri, which was launched in 2019.

• Udaygiri, the second ship, was launched in May 2022, and will likely be commissioned in 2024.

Hence option 4th is correct.