Which one of the following instruments is not made from dried lauki?

All four musical instruments mentioned are used in the been parties of kalbeliyas who are snake charmers. Three out of the four musical instruments are made from dried gourd or lauki. They are tumba, khanjiri and been. The only option left is option B, dhol which, instead of a dried gourd, is made using wood, animal skin, parchment, and cotton.