The correct answer is: A. Will change the quantity in same direction.
Demand is inelastic when the quantity demanded does not change much in response to a change in price. This means that if the price of a good increases, consumers will not buy much less of it, and if the price decreases, they will not buy much more of it.
When demand is inelastic, a change in price will cause a change in the quantity demanded in the same direction. For example, if the price of a good increases, consumers will buy less of it, and if the price decreases, they will buy more of it.
This is because consumers are not very sensitive to changes in price when demand is inelastic. They are willing to pay a higher price for a good, or they are not willing to buy much less of a good even if the price decreases.
The opposite is true when demand is elastic. When demand is elastic, a change in price will cause a change in the quantity demanded in the opposite direction. For example, if the price of a good increases, consumers will buy much less of it, and if the price decreases, they will buy much more of it.
This is because consumers are very sensitive to changes in price when demand is elastic. They are not willing to pay a higher price for a good, and they are willing to buy much more of a good even if the price decreases.
In conclusion, if demand is inelastic, a change in the price will cause a change in the quantity demanded in the same direction.