Consider the following statements about the humanoid's skull for the Gaganyaan mission:
1. The humanoid's skull is designed and developed by experts at the ISRO Inertial Systems Unit (IISU), Thiruvananthapuram.
2. The skull weighs 800 grams and measures 200 mm x 220 mm.
3. It is made from a high-strength aluminum alloy to withstand pressure and vibration.
Which of the statements given above is/are incorrect?
1
1 and 2 only
2
1 only
3
None
4
1, 2, and 3