10. A gold ring is said to be 18 karats which contains:
A. 18g of gold for every 24g of the material and 6g of other material like copper or silver.
B. 18g of gold for every 44g of the material and 6g of other material like copper or silver.
C. 14g of gold for every 10g of the material and 6g of other material like copper or silver.
D. 14g of gold for every 24g of the material like copper or silver.​