Answer:
(1) Short run - (A)
(2) Immediate run - (B)
(3) Long run - (C)
In a short run, all the changes occur in an economy are for shorter time period and buyers have little time to respond to these changes. Hence, the demand curve is elastic in nature.
In an immediate run, there will be no time for the consumers to respond to the changes occur in an economy. Suppose there is an increase in the prices of the goods, as a result there will no changes occur in the quantity demanded. Hence, the demand curve is inelastic, means that there is no effect on quantity demanded.
In a long run, there is enough or more than enough time for the consumers to respond to the changes. Hence, the demand curve is elastic in nature.