The present situation in about half of the states is that the graduated licensing system ______.

A．Teenagers should spend more time learning to drive.
B．Driving is a skill too complicated for teenagers to learn.
C．Restrictions should be imposed on teenagers applying to take driving lessons.
D．The licensing authorities are partly responsible for teenagers' driving accidents.

A．Adults giving a lift to teenagers on the highway after 10 p.m.
B．A teenager driving after midnight with passengers in the car.
C．Adults driving with three or more teenage passengers late at night.
D．A teenager getting a lift from a stranger on the highway at midnight.