The number about reported thefts and convictions is used to illustrate that ______.

A．crime decreases are not to be taken seriously
B．minor cases should also be registered
C．administrative changes should be made to curb crime
D．monetary level is an important criterion for judging crime

A．Charles had very few friends.
B．The meeting aboard the ship was their first.
C．Diana went after Charles with determination.
D．Charles took an interest in Diana aboard the ship.