Which statements are true for Khejri trees-
1. The bark of this tree is used to cure various medical ailments.
2. It is also known for its warming properties.
3. The tree is known as the king of the desert and is the state tree of Rajasthan.
1. Only 1 is correct
2. Only 1 and 2 are correct
3. Only 1 and 3 are correct
4. All are correct