An Inconsistency in the Mercantilist Doctrine,as Pointed Out by David

An inconsistency in the mercantilist doctrine,as pointed out by David Hume,is that:

A) it indirectly helped increase volume of a country's imports.
B) it presented a crude case for exclusion of government in matters pertaining to exports and imports.
C) no country could sustain a surplus on the balance of trade.
D) it was not backed by either sound political principles or social ideologies.