Answer:
The correct answer is option B.
Step-by-step explanation:
France can produce 150 barrels of wine or 100 bolts of cloth.
England can produce 50 barrels of wine or 150 bolts of cloth.
The opportunity cost of producing a barrel of wine for France
=

= 0.66 bolts of cloth
The opportunity cost of producing a barrel of wine for England
=

= 3 bolts of cloth
France has a lower opportunity cost for producing wine, so we can say it has a comparative advantage in producing wine.
The opportunity cost of producing a bolt of cloth for France
=

= 1.5 barrel of wine
The opportunity cost of producing a bolt of cloth for England
=

= 0.33 barrel of wine
England has a lower opportunity cost for producing cloth, so we can say it has a comparative advantage in producing cloth.
1 barrel of wine exchanges for 1 bolt of cloth and France exports 50 units of wine.
France produces 150 barrels of wine and 0 units of cloth. France consumes 100 units of wine and 50 units of cloth.