What does the sentence "but the well-mannered motorist is the exception to the rule" imply

A．They are vain, selfish people.
B．They seem to have psychological trouble.
C．They are shy and cowardly.
D．They are inconsiderate about other people’s needs.

A．Because they find some work exceedingly dull.
B．Because they find work less painful than idleness.
C．Because they have too much leisure and don’t know how to kill time.
D．Because they have to work as hard as if they were poor.