राजस्थान भारत के जिप्सम का लगभग कितना प्रतिशत उत्पादन करता है?

Assertion A: Zawar area, south-west of Udaipur, is primary area of lead and zinc in Rajasthan. Reason R: Both alloy metals used in dry batteries and process plates.

Which statements about copper in Rajasthan are correct? (a) Ganeshwar at east of Khetri (b) Rajasthan has 2nd rank in copper (c) Copper in Meghdoot & Mahabharat (d) Mohenjo-Daro dancing girl is copper