Agricultural product subsidies usually refer to a country's government providing financial support to its agricultural product producers or operators, including cash subsidies, price support or other policy preferential policies, so that its agricultural products can obtain competitive advantages compared with similar products without subsidies in the international and domestic markets.
According to the above definition, which of the followings is an agricultural product subsidy?
In the market of Country A, the government buys the corn planted by farmers at a price higher than the international market price, and then sells it at a low price to encourage farmers to plant corn. An enterprise in this country uses corn as the main feed to cultivate broilers, and then exports it to Country B in large quantities.