Which of the following statements are true about the Garhapatya fire in the Vedic period?

1. It was the domestic fire that householders were obligated to maintain.
2. The Garhapatya fire was used to light the other two fires in Vedic rituals.
3. It symbolized the sun and was lit only during certain religious occasions.
4. The fire was inherited by the son from his father, along with the responsibility to maintain it.