The world price of a pound of almonds is $$4\mathrm{.}50.$ Before Uruguay allowed trade in almonds, the price of a pound of almonds there was $$3\mathrm{.}00.$ Once Uruguay began allowing trade in almonds with other countries, Uruguay began

a$.$ importing almonds and the price per pound in Uruguay remained at $$3\mathrm{.}00.$

b$.$ exporting almonds and the price per pound in Uruguay remained at $$3\mathrm{.}00.$

c$.$ importing almonds and the price per pound in Uruguay increased to $$4\mathrm{.}50.$

d$.$ exporting almonds and the price per pound in Uruguay increased to $$4\mathrm{.}50.$