Consider the market for cereal in San Francisco, where there are over a thousand stores that sell cereal at any given moment. Suppose the Surgeon General issues a public statement saying that...

Consider the market for cereal in San Francisco, where there are over a thousand stores that sell cereal at any given moment. Suppose the Surgeon General issues a public statement saying that consuming cereal is bad for your health.

Holding all else constant, this will lead to a:
a) Change in Demand
b) Change in Supply
c) Change in Demand and Change in Supply
 d) No change in Demand and Supply