A、2 million. B、3 million. C、5 million. D、6 million. BWhat is the population of San Francisco today?

By 1862 telegraph communications linked San Francisco with eastern cities, and by 1869, the first transcontinental railroad connected the Pacific coast with the Atlantic sea-board. Today San Francisco has a population of almost three million. It is the financial center of the West, and serves as the terminus for trans-Pacific steamship lines and air traffic. The port of San Francisco, which is almost eighteen miles long with forty-two piers, handles between five and six million tons of cargo annually.
    And now, if you will look to your right, you should just be able to see the east section of the Golden Gate Bridge. The bridge, which is more than one mile long, spans the harbor from San Francisco to Marin County and the Red Wood Highway. It was completed in 1937 at a cost of thirty-two million dollars and is still one of the largest suspension bridges in the world.