In the 1970s, I temporarily relocated from Vancouver to Boston. A few days after I arrived, someone said, “After work, I'm going to take the T [subway] to BC.” I was awed by the concept of a continental mass-transit system, but puzzled. It turns out that in the Massachusetts Bay area, BC is Boston College.
Click through to the article you are commenting on, it’s very clear. It is a link to the official government site for British Columbia, a large province encompassing the entire pacific coast of Canada.
Context is king.