Answer: B. the demand falls while the supply rises
Step-by-step explanation:
The price of a product is determined by the interaction of two major economic factors: demand and supply. The law of supply and demand states that if demand for a product increases while the supply remains constant, the price of the product will rise. On the other hand, if demand decreases while supply remains constant, the price of the product will fall. In the case where both demand and supply rise, the price of the product will increase, but to a lesser degree than if only demand had risen. Finally, if both demand and supply fall, the price of the product will fall the most, since there is a decrease in both the desire for the product and the ability to produce it.