Consider the following statements regarding the rituals of the Karma Festival:

1. During the festival, young women bring clear sand from the river and sow seven types of grains in it.

2. The Karam tree branch is planted in the courtyard or 'akhra' as a central part of the celebration.

3. The conclusion of the festival involves the immersion of the Karam tree branch in a river or pond, symbolizing the end of the harvest season.

Which of the statements given above is/are correct?