The correct option is B Product Subsidies
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Subsidies on products is a sub-item within subsidies. Subsidies on products are subsidies paid per unit of a good or service produced or imported.
The subsidy may be a specific amount of money per unit of quantity of a good or service, or it may be calculated ad valorem as a specified percentage of the price per unit.
Subsidy on production is independent of the volume of goods or services produced.