JAMB Economics 1982 Question 18

The sloping downward of the demand curve implies that

1. A.an increase in price leads to an increase in quantity demanded
2. B.an increase in price leaves the quantity demanded unchanged
3. C.a decrease in price leads to a decrease in quantity demanded
4. D.a decrease in price leads to an increase in quantity demanded
5. E.suppliers respond by offering less commodities for sale.