Which of These Statements Best Represents the Law of Demand

Which of these statements best represents the law of demand?

A) When buyers' tastes for a good increase, they purchase more of the good.
B) When income levels increase, buyers respond by purchasing more of most goods.
C) When the price of a good falls, buyers respond by purchasing more of the good.
D) When buyers' demands for a good increase, the price of the good will increase.