How to travel down nob hill on the san francisco cable cars<br>Recognize the route system of the trolley in san francisco. The cable cars (or trolleys) run on three routes. Two of these routes begin at the powell & market turntable; they both run over nob hill.
Does this next sentence follow, given the preceding text?
Three cable car routes travel on powell street.

 A. Yes. B. It's impossible to say. C. No.