You are driving on a two-lane highway with traffic moving in both directions. On the left side of the road ahead you see a traffic sign facing you, shaped like a pennant. The sign is A: A No Passing Zone sign. You are entering a No Passing Zone and must not pass. B: An Animal Crossing sign. You must watch for animals on the roadway. C: A Bicycle Route sign. You must watch for bicyclists riding on the shoulder of the highway.