trade agreement signed between Alberta and British Columbia

In the article, “”Let’s make a deal, Western-style””, the trade agreement signed between Alberta and British Columbia will,
A) foster greater trade between Alberta and British Columbia with the Far East.
B) force Alberta and British Columbia to increase the amount of trade between the two provinces.
C) allow businesses in either province to buy goods or services from anywhere in Alberta or British Columbia without the added cost of tariffs.
D) impose trade barriers between every other province and the combined provinces of Alberta and British Columbia.