While All Governments Practise Certain Levels of Subsidies and Protectionism

While all governments practise certain levels of subsidies and protectionism to varying degrees, the overall trajectory of trade policy has been in which direction?

A) Identifying "most favoured nations" which only trade with countries that are signatories to common multi-lateral trade agreements
B) More open markets
C) Identifying "most favoured nations" and privileging trade relations with some countries over others
D) More closed markets
E) Consolidating markets