Explanation:

Second option is correct.
Bidriware is the most well known of Andhra's handicrafts - a metal craft that derives its name from 'Bidar', the hometown of this exquisite craft. It is an art of inlaying silver on black metal and it is believed that this ancient and eye-catching craft entered India more than 4000 years ago from the culture-rich Persians, Syrians and Iranians.
The craftsmen cast their own pieces, making moulding clay from sand, resin and oil in proportion (20:2:1) and add borax to the clay surface to prevent the metal sticking. Flasks, jugs and vases are usually cast in two sections divided along the vertical axes. The alloy, the darkened zinc used as base is described as nine to sixteen part of zinc to one of copper, is melted and poured into the moulds and solidified.