Show me the steps to solve Suppose we observed the equilibrium price and quantity decreasing for rain boots. Which of the follow is mostly likely the cause of this?
a. Umbrellas, a compliment in production to rain boots, became cheaper to make.
b. Rain boots became cheaper to make.
c. Umbrellas, a compliment in consumption to rain boots, became cheaper to buy.
d. Consumers have less money to buy things.