The diagram illustrates the equilibrium market price $P_E$ and quantity $Q_E$ for rice in a country. Which government action could make the market price of rice rise or fall to $P_1$?
- Aencouraging the export of rice from the country
- Bimposing a maximum price below the market price for rice
- Cproviding a subsidy for farmers to produce more rice
- Dreducing import tariffs on rice