A Farmer Has Many Competitors and Exists in a Market

A farmer has many competitors and exists in a market structure known as perfect competition. This means that price is determined outside of the individual farmer's ability to charge a price higher than the going market for a bushel of wheat, hence the farmer is

A) a price maker and can therefore charge different customers different prices.
B) always able to price produce above the competition and earn a larger profit.
C) never able to determine any prices he charges for anything, such as soybeans.
D) a price taker and cannot affect the market price of wheat.