The law of demand states that:
a. a decrease in supply of a good will lead to a decrease in demand for that good.
b. an increase in the price of a good will lead to a decrease in consumer demand, and a decrease in the price of a good will lead to an increase in consumer demand.
c. an increase in supply of a good will lead to a decrease in demand for that good.
d. an increase in income will lead to a decrease in demand, and a decrease in income will lead to an increase in demand.

Power plants that rely on coal increase the amount of sulfur dioxide that dissolves into the air, eventually increasing the acidity of precipitation. the higher acidity of rain and snow can damage forests by making it more difficult for plants to absorb minerals from the soil. the equations below provide information about the market demand and supply of electricity. there is a constant marginal external cost of $25 per unit of electricity.d: qd= 200 – 2ps: qs=p – 10what quantity of electricity satisfies allocative efficiency in this market? a. 60b. 70c. 50d. 43.3