In Which of the Following Ways Did the Nigerian Economic

In which of the following ways did the Nigerian economic policy of the 1990s differ from that of the 1970s?

A) Tariff barriers meant to protect native industries were lower and there were fewer parastatal industries.
B) Patrimonialism was a bigger problem,and the state intensified its policy of import substitution industrialization.
C) Tariff barriers to protect native industries were higher,but Nigeria was less dependent on oil exports.
D) There was less patrimonialism on the part of the government and much less state regulation of the economy.