Assume that the government is planning to address the problem of high prices for flu vaccine. You are hired as an economic consultant to decide upon what kind of a policy to implement in order to improve both the accessibility and affordability of flu vaccine for consumers. Which of the following policies would most likely achieve the goal? a. A price floor. b. A price ceiling. c. A subsidy to the producers. d. A subsidy to the consumers. Using four separate sets of supply-and-demand graphs show the effect of each of the policies on market outcomes. Assume competitive markets with an upward-sloping supply curve and a downward-sloping demand curve.