The Nation of Waterland Forbids International Trade

The nation of Waterland forbids international trade.In Waterland,you can obtain a computer by trading 2 bicycles.In other countries,you can obtain a computer by trading 3 bicycles.These facts indicate that

A) if Waterland were to allow trade,it would export computers.
B) Waterland has an absolute advantage,relative to other countries,in producing computers.
C) Waterland has a comparative advantage,relative to other countries,in producing bicycles.
D) All of the above are correct.