Please answer the following question: Write a multi-choice question for the following article, with the given choices and answer: Article: Vancouver is located in the southwest corner of Canada in the province of British Columbia. Vancouver is the largest city in the province and the third largest in Canada. It covers an area of 113 sq km. It is surrounded by water on three sides and overlooked by the Coast Range. Its climate is one of the mildest in Canada. Temperatures average 3degC in January and 18degC in July. Vancouver's most rainfall occurs in winter. Archaeological evidence shows that coastal Indians had settled the Vancouver area by 500 BC. British naval captain George Vancouver explored the area in 1792. Vancouver was founded as a sawmill settlement called Granville in the 1870s. The city was united in 1886 and renamed after Captain Vancouver. As the main western terminus of Canada's transcontinental highway and rail routes, Vancouver is the primary city of western Canada, as well as one of the nation's largest industrial centers. The Port of Vancouver is Canada's largest and most various port, trading more than $43 billion in goods with more than 90 trading economies annually. Port activities generate 69,200 jobs in total with $4 billion in gross domestic product (GDP) and $8.9 billion in economic output. Vancouver is a major tourist place. In addition to the city's scenic location, visitors enjoy beautiful gardens and world-famous Stanley Park, one of more than 180 city parks, and a combination of natural forest and parklands near the city centre. Options: A the Port of Vancouver, the largest one in Canada B how Vancouver got its name C Vancouver's history D a brief introduction of the city of Vancouver Answer: D a brief introduction of the city of Vancouver Question:
A:
The passage mainly tells us _ .