Answer: Option 'B' and 'C' are correct.
Explanation:
"Law of demand" states all factors remains constant, price of commodity and the quantity demanded of that commodity is inversely related to each other."
So, it means if price of commodity rises, the quantity demanded will be decrease.
On the other hand, if price of commodity falls, the quantity demanded will be increase.
Hence, according to law we get that
Option 'B' and 'C' are correct.