【单选题】

Questions 11-13 are based on the following monologue aboutAmerican advertising. You now have 15 seconds to read Questions 11-13. What do we learn about the speakerA．He has been inAmerica for three years.

B．He has always lived inAmericA、
C．He visitedAmerica three years ago.
D．He has come toAmerica to do research on advertising.