It is argued that special interest groups are likely to take over and promote protectionist policies, which may lead to a decrease in national economic welfare. This argument leads to ____________.

A、a presumption that in practice a free trade policy is likely to be better than alternatives.;
B、a presumption that trade policy should be shifted to Non-Governmental Organizations, so as to limit taxpayer burden.;
C、a presumption that free trade is generally a second-best policy, to be avoided if feasible alternatives are available.;
D、a presumption that free trade is the likely equilibrium solution if the government allows special interest groups to dictate its trade policy.