European Global Commercial Aircraft Firms Were Able to Catch Up

European global commercial aircraft firms were able to catch up to American firms by the late 1990s because

A) they used similar industrial policy tactics used by American governments in a previous era.
B) of different sector advantages obtained by European domestic interest groups.
C) tariffs and quotas kept American firms out of the European market.
D) of late-mover advantages to utilize the most recent technological innovations.
E) the US was unsuccessful in of obtaining WTO sanctions against their illegal actions.